153978696 has 24 divisors (see below), whose sum is σ = 417025830. Its totient is φ = 51326208.

The previous prime is 153978683. The next prime is 153978733. The reversal of 153978696 is 696879351.

It can be written as a sum of positive squares in only one way, i.e., 132020100 + 21958596 = 11490^2 + 4686^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1069225 + ... + 1069368.

Almost surely, 2^153978696 is an apocalyptic number.

It is an amenable number.

153978696 is an abundant number, since it is smaller than the sum of its proper divisors (263047134).

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

153978696 is a wasteful number, since it uses less digits than its factorization.

153978696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138605 (or 2138598 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 153978696 is about 12408.8152536816. The cubic root of 153978696 is about 535.9861231278.

The spelling of 153978696 in words is "one hundred fifty-three million, nine hundred seventy-eight thousand, six hundred ninety-six".