149663428 has 6 divisors (see below), whose sum is σ = 261911006. Its totient is φ = 74831712.

The previous prime is 149663411. The next prime is 149663447. The reversal of 149663428 is 824366941.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 102576384 + 47087044 = 10128^2 + 6862^2 .

It is a super-2 number, since 2×149663428² = 44798283361422368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18707925 + ... + 18707932.

Almost surely, 2^149663428 is an apocalyptic number.

It is an amenable number.

149663428 is a deficient number, since it is larger than the sum of its proper divisors (112247578).

149663428 is a wasteful number, since it uses less digits than its factorization.

149663428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37415861 (or 37415859 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 149663428 is about 12233.7005031184. The cubic root of 149663428 is about 530.9315857444.

The spelling of 149663428 in words is "one hundred forty-nine million, six hundred sixty-three thousand, four hundred twenty-eight".