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7952420 = 2257431321
BaseRepresentation
bin11110010101100000100100
3112222000200002
4132111200210
54013434140
6442240432
7124410620
oct36254044
915860602
107952420
114541853
1227b6118
131855898
1410b0180
15a71415
hex795824

7952420 has 48 divisors (see below), whose sum is σ = 19544448. Its totient is φ = 2661120.

The previous prime is 7952419. The next prime is 7952423. The reversal of 7952420 is 242597.

It is not an unprimeable number, because it can be changed into a prime (7952423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5360 + ... + 6680.

It is an arithmetic number, because the mean of its divisors is an integer number (407176).

Almost surely, 27952420 is an apocalyptic number.

7952420 is a gapful number since it is divisible by the number (70) 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 7952420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9772224).

7952420 is an abundant number, since it is smaller than the sum of its proper divisors (11592028).

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

7952420 is a wasteful number, since it uses less digits than its factorization.

7952420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 7952420 is about 2820.0035460971. The cubic root of 7952420 is about 199.6027113311.

The spelling of 7952420 in words is "seven million, nine hundred fifty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 43 70 86 140 172 215 301 430 602 860 1204 1321 1505 2642 3010 5284 6020 6605 9247 13210 18494 26420 36988 46235 56803 92470 113606 184940 227212 284015 397621 568030 795242 1136060 1590484 1988105 3976210 7952420