149719728 has 20 divisors (see below), whose sum is σ = 386776088. Its totient is φ = 49906560.

The previous prime is 149719727. The next prime is 149719771. The reversal of 149719728 is 827917941.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 3119161 = 149719728 / (1 + 4 + 9 + 7 + 1 + 9 + 7 + 2 + 8).

It is not an unprimeable number, because it can be changed into a prime (149719727) 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, 1559533 + ... + 1559628.

Almost surely, 2^149719728 is an apocalyptic number.

It is an amenable number.

149719728 is an abundant number, since it is smaller than the sum of its proper divisors (237056360).

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

149719728 is a wasteful number, since it uses less digits than its factorization.

149719728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119172 (or 3119166 counting only the distinct ones).

The product of its digits is 254016, while the sum is 48.

The square root of 149719728 is about 12236.0013076168. The cubic root of 149719728 is about 530.9981522203.

The spelling of 149719728 in words is "one hundred forty-nine million, seven hundred nineteen thousand, seven hundred twenty-eight".