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806970400 = 25521815573
BaseRepresentation
bin110000000110010…
…110010000100000
32002020110100021121
4300012112100200
53123041023100
6212024102024
725666064245
oct6006262040
92066410247
10806970400
11384571895
121a6304914
13cb2537a2
14792615cc
154aca251a
hex30196420

806970400 has 72 divisors (see below), whose sum is σ = 1981256004. Its totient is φ = 320947200.

The previous prime is 806970391. The next prime is 806970419. The reversal of 806970400 is 4079608.

It can be written as a sum of positive squares in 6 ways, for example, as 183184 + 806787216 = 428^2 + 28404^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142014 + ... + 147586.

Almost surely, 2806970400 is an apocalyptic number.

806970400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 806970400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990628002).

806970400 is an abundant number, since it is smaller than the sum of its proper divisors (1174285604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806970400 is a wasteful number, since it uses less digits than its factorization.

806970400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774 (or 5761 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 806970400 is about 28407.2244332318. The cubic root of 806970400 is about 931.0061181400.

The spelling of 806970400 in words is "eight hundred six million, nine hundred seventy thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 181 200 362 400 724 800 905 1448 1810 2896 3620 4525 5573 5792 7240 9050 11146 14480 18100 22292 27865 28960 36200 44584 55730 72400 89168 111460 139325 144800 178336 222920 278650 445840 557300 891680 1008713 1114600 2017426 2229200 4034852 4458400 5043565 8069704 10087130 16139408 20174260 25217825 32278816 40348520 50435650 80697040 100871300 161394080 201742600 403485200 806970400