78031074 has 16 divisors (see below), whose sum is σ = 170249760. Its totient is φ = 23645760.

The previous prime is 78031073. The next prime is 78031103. The reversal of 78031074 is 47013087.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78031073) 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, 591079 + ... + 591210.

It is an arithmetic number, because the mean of its divisors is an integer number (10640610).

Almost surely, 2^78031074 is an apocalyptic number.

78031074 is an abundant number, since it is smaller than the sum of its proper divisors (92218686).

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

78031074 is a wasteful number, since it uses less digits than its factorization.

78031074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182305.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 78031074 is about 8833.5199099793. The cubic root of 78031074 is about 427.3225993530.

The spelling of 78031074 in words is "seventy-eight million, thirty-one thousand, seventy-four".