149547428 has 24 divisors (see below), whose sum is σ = 264798072. Its totient is φ = 73896704.

The previous prime is 149547413. The next prime is 149547439. The reversal of 149547428 is 824745941.

149547428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 83320384 + 66227044 = 9128^2 + 8138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135776 + ... + 136872.

It is an arithmetic number, because the mean of its divisors is an integer number (11033253).

Almost surely, 2^149547428 is an apocalyptic number.

It is an amenable number.

149547428 is a deficient number, since it is larger than the sum of its proper divisors (115250644).

149547428 is a wasteful number, since it uses less digits than its factorization.

149547428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471 (or 1469 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 149547428 is about 12228.9585819889. The cubic root of 149547428 is about 530.7943801417.

The spelling of 149547428 in words is "one hundred forty-nine million, five hundred forty-seven thousand, four hundred twenty-eight".