78519652 has 24 divisors (see below), whose sum is σ = 142338560. Its totient is φ = 37860480.

The previous prime is 78519613. The next prime is 78519653. The reversal of 78519652 is 25691587.

It is a super-2 number, since 2×78519652² = 12330671500402208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78519599 and 78519608.

It is not an unprimeable number, because it can be changed into a prime (78519653) 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 7 ways as a sum of consecutive naturals, for example, 40849 + ... + 42727.

Almost surely, 2^78519652 is an apocalyptic number.

It is an amenable number.

78519652 is a deficient number, since it is larger than the sum of its proper divisors (63818908).

78519652 is a wasteful number, since it uses less digits than its factorization.

78519652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251 (or 2249 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 78519652 is about 8861.1315304537. The cubic root of 78519652 is about 428.2126130885.

The spelling of 78519652 in words is "seventy-eight million, five hundred nineteen thousand, six hundred fifty-two".