149520388 has 12 divisors (see below), whose sum is σ = 261994572. Its totient is φ = 74664800.

The previous prime is 149520373. The next prime is 149520419. The reversal of 149520388 is 883025941.

It can be written as a sum of positive squares in 2 ways, for example, as 112529664 + 36990724 = 10608^2 + 6082^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149520388.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20263 + ... + 26638.

It is an arithmetic number, because the mean of its divisors is an integer number (21832881).

Almost surely, 2^149520388 is an apocalyptic number.

It is an amenable number.

149520388 is a deficient number, since it is larger than the sum of its proper divisors (112474184).

149520388 is a wasteful number, since it uses less digits than its factorization.

149520388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47702 (or 47700 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 149520388 is about 12227.8529595346. The cubic root of 149520388 is about 530.7623868462.

The spelling of 149520388 in words is "one hundred forty-nine million, five hundred twenty thousand, three hundred eighty-eight".