149691628 has 12 divisors (see below), whose sum is σ = 262248840. Its totient is φ = 74763392.

The previous prime is 149691623. The next prime is 149691637. The reversal of 149691628 is 826196941.

It is a happy number.

149691628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (149691623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16426 + ... + 23857.

It is an arithmetic number, because the mean of its divisors is an integer number (21854070).

Almost surely, 2^149691628 is an apocalyptic number.

It is an amenable number.

149691628 is a deficient number, since it is larger than the sum of its proper divisors (112557212).

149691628 is a wasteful number, since it uses less digits than its factorization.

149691628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41216 (or 41214 counting only the distinct ones).

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

The square root of 149691628 is about 12234.8530027949. The cubic root of 149691628 is about 530.9649301864.

The spelling of 149691628 in words is "one hundred forty-nine million, six hundred ninety-one thousand, six hundred twenty-eight".