149909428 has 24 divisors (see below), whose sum is σ = 271514880. Its totient is φ = 72346560.

The previous prime is 149909413. The next prime is 149909429. The reversal of 149909428 is 824909941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149909429) 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, 53568 + ... + 56296.

It is an arithmetic number, because the mean of its divisors is an integer number (11313120).

Almost surely, 2^149909428 is an apocalyptic number.

It is an amenable number.

149909428 is a deficient number, since it is larger than the sum of its proper divisors (121605452).

149909428 is a wasteful number, since it uses less digits than its factorization.

149909428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 149909428 is about 12243.7505691679. The cubic root of 149909428 is about 531.2223218244. Note that the first 3 decimals are identical.

The spelling of 149909428 in words is "one hundred forty-nine million, nine hundred nine thousand, four hundred twenty-eight".