78532892 has 6 divisors (see below), whose sum is σ = 137432568. Its totient is φ = 39266444.

The previous prime is 78532847. The next prime is 78532903. The reversal of 78532892 is 29823587.

It is a super-4 number, since 4×78532892⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9816608 + ... + 9816615.

It is an arithmetic number, because the mean of its divisors is an integer number (22905428).

Almost surely, 2^78532892 is an apocalyptic number.

It is an amenable number.

78532892 is a deficient number, since it is larger than the sum of its proper divisors (58899676).

78532892 is a wasteful number, since it uses less digits than its factorization.

78532892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19633227 (or 19633225 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 78532892 is about 8861.8785818809. The cubic root of 78532892 is about 428.2366801691.

The spelling of 78532892 in words is "seventy-eight million, five hundred thirty-two thousand, eight hundred ninety-two".