78023074 has 4 divisors (see below), whose sum is σ = 117034614. Its totient is φ = 39011536.

The previous prime is 78023069. The next prime is 78023089. The reversal of 78023074 is 47032087.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57836025 + 20187049 = 7605^2 + 4493^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19505767 + ... + 19505770.

Almost surely, 2^78023074 is an apocalyptic number.

78023074 is a deficient number, since it is larger than the sum of its proper divisors (39011540).

78023074 is a wasteful number, since it uses less digits than its factorization.

78023074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39011539.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 78023074 is about 8833.0670777482. The cubic root of 78023074 is about 427.3079953521.

The spelling of 78023074 in words is "seventy-eight million, twenty-three thousand, seventy-four".