149542228 has 24 divisors (see below), whose sum is σ = 297904320. Its totient is φ = 65017920.

The previous prime is 149542201. The next prime is 149542229. The reversal of 149542228 is 822245941.

149542228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149542229) 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, 72873 + ... + 74896.

It is an arithmetic number, because the mean of its divisors is an integer number (12412680).

Almost surely, 2^149542228 is an apocalyptic number.

It is an amenable number.

149542228 is a deficient number, since it is larger than the sum of its proper divisors (148362092).

149542228 is a wasteful number, since it uses less digits than its factorization.

149542228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147807 (or 147805 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 149542228 is about 12228.7459700494. The cubic root of 149542228 is about 530.7882278844.

The spelling of 149542228 in words is "one hundred forty-nine million, five hundred forty-two thousand, two hundred twenty-eight".