149172312 has 32 divisors (see below), whose sum is σ = 374431680. Its totient is φ = 49524000.

The previous prime is 149172311. The next prime is 149172377. The reversal of 149172312 is 213271941.

It is a self number, because there is not a number n which added to its sum of digits gives 149172312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149172311) 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, 6358 + ... + 18405.

It is an arithmetic number, because the mean of its divisors is an integer number (11700990).

Almost surely, 2^149172312 is an apocalyptic number.

149172312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149172312 is an abundant number, since it is smaller than the sum of its proper divisors (225259368).

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

149172312 is a wasteful number, since it uses less digits than its factorization.

149172312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25023 (or 25019 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 149172312 is about 12213.6117508295. The cubic root of 149172312 is about 530.3502040523.

The spelling of 149172312 in words is "one hundred forty-nine million, one hundred seventy-two thousand, three hundred twelve".