78325902 has 96 divisors (see below), whose sum is σ = 194088960. Its totient is φ = 22682880.

The previous prime is 78325889. The next prime is 78325903. The reversal of 78325902 is 20952387.

It is a happy number.

It is a super-2 number, since 2×78325902² = 12269893848227208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78325903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217999 + ... + 218357.

It is an arithmetic number, because the mean of its divisors is an integer number (2021760).

Almost surely, 2^78325902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78325902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97044480).

78325902 is an abundant number, since it is smaller than the sum of its proper divisors (115763058).

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

78325902 is a wasteful number, since it uses less digits than its factorization.

78325902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 78325902 is about 8850.1922013027. The cubic root of 78325902 is about 427.8601131048.

The spelling of 78325902 in words is "seventy-eight million, three hundred twenty-five thousand, nine hundred two".