149398656 has 128 divisors (see below), whose sum is σ = 438143040. Its totient is φ = 44728320.

The previous prime is 149398621. The next prime is 149398673. The reversal of 149398656 is 656893941.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 149398599 and 149398608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477156 + ... + 477468.

Almost surely, 2^149398656 is an apocalyptic number.

149398656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149398656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219071520).

149398656 is an abundant number, since it is smaller than the sum of its proper divisors (288744384).

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

149398656 is a wasteful number, since it uses less digits than its factorization.

149398656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 442 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 149398656 is about 12222.8742937167. The cubic root of 149398656 is about 530.6183077010.

The spelling of 149398656 in words is "one hundred forty-nine million, three hundred ninety-eight thousand, six hundred fifty-six".