78245902 has 16 divisors (see below), whose sum is σ = 134318592. Its totient is φ = 33488280.

The previous prime is 78245887. The next prime is 78245903. The reversal of 78245902 is 20954287.

It is a super-2 number, since 2×78245902² = 12244842359587208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78245903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8127 + ... + 14917.

It is an arithmetic number, because the mean of its divisors is an integer number (8394912).

Almost surely, 2^78245902 is an apocalyptic number.

78245902 is a deficient number, since it is larger than the sum of its proper divisors (56072690).

78245902 is a wasteful number, since it uses less digits than its factorization.

78245902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 78245902 is about 8845.6713707892. The cubic root of 78245902 is about 427.7143951569.

The spelling of 78245902 in words is "seventy-eight million, two hundred forty-five thousand, nine hundred two".