149575808 has 72 divisors (see below), whose sum is σ = 318270855. Its totient is φ = 70014208.

The previous prime is 149575787. The next prime is 149575813. The reversal of 149575808 is 808575941.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 74787904 + 74787904 = 8648^2 + 8648^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8648.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3182441 + ... + 3182487.

Almost surely, 2^149575808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149575808

149575808 is an abundant number, since it is smaller than the sum of its proper divisors (168695047).

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

149575808 is an frugal number, since it uses more digits than its factorization.

149575808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 47.

The square root of 149575808 is about 12230.1188874025. The cubic root of 149575808 is about 530.8279547561.

The spelling of 149575808 in words is "one hundred forty-nine million, five hundred seventy-five thousand, eight hundred eight".