78023270 has 32 divisors (see below), whose sum is σ = 153740160. Its totient is φ = 28333440.

The previous prime is 78023201. The next prime is 78023279. The reversal of 78023270 is 7232087.

It is a super-2 number, since 2×78023270² = 12175261322985800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78023279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3011 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (4804380).

Almost surely, 2^78023270 is an apocalyptic number.

78023270 is a deficient number, since it is larger than the sum of its proper divisors (75716890).

78023270 is a wasteful number, since it uses less digits than its factorization.

78023270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 78023270 is about 8833.0781724153. The cubic root of 78023270 is about 427.3083531621.

The spelling of 78023270 in words is "seventy-eight million, twenty-three thousand, two hundred seventy".