78264746 has 8 divisors (see below), whose sum is σ = 134168160. Its totient is φ = 33542028.

The previous prime is 78264737. The next prime is 78264757. The reversal of 78264746 is 64746287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78264746² = 12250740932889032, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78264697 and 78264706.

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 3 ways as a sum of consecutive naturals, for example, 2795156 + ... + 2795183.

It is an arithmetic number, because the mean of its divisors is an integer number (16771020).

Almost surely, 2^78264746 is an apocalyptic number.

78264746 is a deficient number, since it is larger than the sum of its proper divisors (55903414).

78264746 is a wasteful number, since it uses less digits than its factorization.

78264746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590348.

The product of its digits is 451584, while the sum is 44.

The square root of 78264746 is about 8846.7364604130. The cubic root of 78264746 is about 427.7487279587.

The spelling of 78264746 in words is "seventy-eight million, two hundred sixty-four thousand, seven hundred forty-six".