78254520 has 32 divisors (see below), whose sum is σ = 234763920. Its totient is φ = 20867840.

The previous prime is 78254513. The next prime is 78254531. The reversal of 78254520 is 2545287.

It is a super-2 number, since 2×78254520² = 12247539800860800, 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325941 + ... + 326180.

Almost surely, 2^78254520 is an apocalyptic number.

It is an amenable number.

78254520 is an abundant number, since it is smaller than the sum of its proper divisors (156509400).

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

78254520 is a wasteful number, since it uses less digits than its factorization.

78254520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652135 (or 652131 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 78254520 is about 8846.1584882931. The cubic root of 78254520 is about 427.7300973949.

The spelling of 78254520 in words is "seventy-eight million, two hundred fifty-four thousand, five hundred twenty".