149257836 has 96 divisors (see below), whose sum is σ = 476295680. Its totient is φ = 39362112.

The previous prime is 149257819. The next prime is 149257847. The reversal of 149257836 is 638752941.

149257836 is a `hidden beast` number, since 1 + 49 + 2 + 578 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 149257791 and 149257800.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2235 + ... + 17421.

Almost surely, 2^149257836 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 149257836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238147840).

149257836 is an abundant number, since it is smaller than the sum of its proper divisors (327037844).

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

149257836 is a wasteful number, since it uses less digits than its factorization.

149257836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15220 (or 15212 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 149257836 is about 12217.1124247917. The cubic root of 149257836 is about 530.4515387768.

The spelling of 149257836 in words is "one hundred forty-nine million, two hundred fifty-seven thousand, eight hundred thirty-six".