149776428 has 12 divisors (see below), whose sum is σ = 349478360. Its totient is φ = 49925472.

The previous prime is 149776427. The next prime is 149776519. The reversal of 149776428 is 824677941.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (149776421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6240673 + ... + 6240696.

Almost surely, 2^149776428 is an apocalyptic number.

It is an amenable number.

149776428 is an abundant number, since it is smaller than the sum of its proper divisors (199701932).

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

149776428 is a wasteful number, since it uses less digits than its factorization.

149776428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12481376 (or 12481374 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 149776428 is about 12238.3180216891. The cubic root of 149776428 is about 531.0651747736.

The spelling of 149776428 in words is "one hundred forty-nine million, seven hundred seventy-six thousand, four hundred twenty-eight".