78081832 has 8 divisors (see below), whose sum is σ = 146403450. Its totient is φ = 39040912.

The previous prime is 78081793. The next prime is 78081847. The reversal of 78081832 is 23818087.

It can be written as a sum of positive squares in only one way, i.e., 59814756 + 18267076 = 7734^2 + 4274^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78081791 and 78081800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4880107 + ... + 4880122.

Almost surely, 2^78081832 is an apocalyptic number.

It is an amenable number.

78081832 is a deficient number, since it is larger than the sum of its proper divisors (68321618).

78081832 is a wasteful number, since it uses less digits than its factorization.

78081832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760235 (or 9760231 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 78081832 is about 8836.3924765710. The cubic root of 78081832 is about 427.4152348382.

The spelling of 78081832 in words is "seventy-eight million, eighty-one thousand, eight hundred thirty-two".