78046520 has 32 divisors (see below), whose sum is σ = 176109120. Its totient is φ = 31128960.

The previous prime is 78046517. The next prime is 78046543. The reversal of 78046520 is 2564087.

It is a super-2 number, since 2×78046520² = 12182518568220800, which contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 12305 + ... + 17535.

It is an arithmetic number, because the mean of its divisors is an integer number (5503410).

Almost surely, 2^78046520 is an apocalyptic number.

It is an amenable number.

78046520 is an abundant number, since it is smaller than the sum of its proper divisors (98062600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78046520 is a wasteful number, since it uses less digits than its factorization.

78046520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5615 (or 5611 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78046520 is about 8834.3941501384. The cubic root of 78046520 is about 427.3507932040.

The spelling of 78046520 in words is "seventy-eight million, forty-six thousand, five hundred twenty".