154878972 has 24 divisors (see below), whose sum is σ = 364702800. Its totient is φ = 51152256.

The previous prime is 154878967. The next prime is 154878979. The reversal of 154878972 is 279878451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154878979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57897 + ... + 60512.

It is an arithmetic number, because the mean of its divisors is an integer number (15195950).

Almost surely, 2^154878972 is an apocalyptic number.

154878972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154878972 is an abundant number, since it is smaller than the sum of its proper divisors (209823828).

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

154878972 is a wasteful number, since it uses less digits than its factorization.

154878972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118525 (or 118523 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 154878972 is about 12445.0380473504. The cubic root of 154878972 is about 537.0286874042.

The spelling of 154878972 in words is "one hundred fifty-four million, eight hundred seventy-eight thousand, nine hundred seventy-two".