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802195680 = 2535111322931
BaseRepresentation
bin101111110100001…
…000100011100000
32001220110202121010
4233310020203200
53120330230210
6211333500520
725610356626
oct5764104340
92056422533
10802195680
11381900540
121a47a1740
13ca271400
147877b516
154a65c920
hex2fd088e0

802195680 has 576 divisors, whose sum is σ = 3187537920. Its totient is φ = 167731200.

The previous prime is 802195673. The next prime is 802195687. The reversal of 802195680 is 86591208.

It is an interprime number because it is at equal distance from previous prime (802195673) and next prime (802195687).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802195687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25877265 + ... + 25877295.

It is an arithmetic number, because the mean of its divisors is an integer number (5533920).

Almost surely, 2802195680 is an apocalyptic number.

802195680 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 802195680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593768960).

802195680 is an abundant number, since it is smaller than the sum of its proper divisors (2385342240).

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

802195680 is a wasteful number, since it uses less digits than its factorization.

802195680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 802195680 is about 28323.0591568072. The cubic root of 802195680 is about 929.1662779016.

The spelling of 802195680 in words is "eight hundred two million, one hundred ninety-five thousand, six hundred eighty".