78262972 has 12 divisors (see below), whose sum is σ = 141378496. Its totient is φ = 37869120.

The previous prime is 78262963. The next prime is 78262979. The reversal of 78262972 is 27926287.

It is a happy number.

It is a super-2 number, since 2×78262972² = 12250185572545568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78262979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315453 + ... + 315700.

Almost surely, 2^78262972 is an apocalyptic number.

It is an amenable number.

78262972 is a deficient number, since it is larger than the sum of its proper divisors (63115524).

78262972 is a wasteful number, since it uses less digits than its factorization.

78262972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631188 (or 631186 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 78262972 is about 8846.6361968830. The cubic root of 78262972 is about 427.7454960566.

The spelling of 78262972 in words is "seventy-eight million, two hundred sixty-two thousand, nine hundred seventy-two".