149672390 has 32 divisors (see below), whose sum is σ = 310901760. Its totient is φ = 50815584.

The previous prime is 149672389. The next prime is 149672399. The reversal of 149672390 is 93276941.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149672399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3170 + ... + 17589.

It is an arithmetic number, because the mean of its divisors is an integer number (9715680).

Almost surely, 2^149672390 is an apocalyptic number.

149672390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149672390 is an abundant number, since it is smaller than the sum of its proper divisors (161229370).

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

149672390 is a wasteful number, since it uses less digits than its factorization.

149672390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20876.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 149672390 is about 12234.0667809196. The cubic root of 149672390 is about 530.9421831094.

The spelling of 149672390 in words is "one hundred forty-nine million, six hundred seventy-two thousand, three hundred ninety".