149976840 has 128 divisors (see below), whose sum is σ = 489000960. Its totient is φ = 36578304.

The previous prime is 149976793. The next prime is 149976881. The reversal of 149976840 is 48679941.

It is a self number, because there is not a number n which added to its sum of digits gives 149976840.

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, 197742 + ... + 198498.

It is an arithmetic number, because the mean of its divisors is an integer number (3820320).

Almost surely, 2^149976840 is an apocalyptic number.

149976840 is a gapful number since it is divisible by the number (10) 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 149976840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244500480).

149976840 is an abundant number, since it is smaller than the sum of its proper divisors (339024120).

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

149976840 is a wasteful number, since it uses less digits than its factorization.

149976840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 149976840 is about 12246.5031743759. The cubic root of 149976840 is about 531.3019374366.

The spelling of 149976840 in words is "one hundred forty-nine million, nine hundred seventy-six thousand, eight hundred forty".