149972868 has 36 divisors (see below), whose sum is σ = 379491840. Its totient is φ = 49939056.

The previous prime is 149972843. The next prime is 149972873. The reversal of 149972868 is 868279941.

149972868 is a `hidden beast` number, since 1 + 499 + 72 + 86 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×149972868² = 44983722272290848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50653 + ... + 53531.

It is an arithmetic number, because the mean of its divisors is an integer number (10541440).

Almost surely, 2^149972868 is an apocalyptic number.

149972868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

149972868 is an abundant number, since it is smaller than the sum of its proper divisors (229518972).

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

149972868 is a wasteful number, since it uses less digits than its factorization.

149972868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336 (or 4331 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 149972868 is about 12246.3410045613. The cubic root of 149972868 is about 531.2972470459.

The spelling of 149972868 in words is "one hundred forty-nine million, nine hundred seventy-two thousand, eight hundred sixty-eight".