78264075 has 12 divisors (see below), whose sum is σ = 129396728. Its totient is φ = 41740800.

The previous prime is 78264061. The next prime is 78264133. The reversal of 78264075 is 57046287.

It is not a de Polignac number, because 78264075 - 2⁷ = 78263947 is a prime.

It is a super-2 number, since 2×78264075² = 12250530871211250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 521686 + ... + 521835.

Almost surely, 2^78264075 is an apocalyptic number.

78264075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78264075 is a deficient number, since it is larger than the sum of its proper divisors (51132653).

78264075 is a wasteful number, since it uses less digits than its factorization.

78264075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043534 (or 1043529 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 78264075 is about 8846.6985367424. The cubic root of 78264075 is about 427.7475055257.

The spelling of 78264075 in words is "seventy-eight million, two hundred sixty-four thousand, seventy-five".