149931280 has 40 divisors (see below), whose sum is σ = 366940800. Its totient is φ = 56815488.

The previous prime is 149931259. The next prime is 149931281. The reversal of 149931280 is 82139941.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (149931281) 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 7 ways as a sum of consecutive naturals, for example, 47800 + ... + 50839.

It is an arithmetic number, because the mean of its divisors is an integer number (9173520).

Almost surely, 2^149931280 is an apocalyptic number.

149931280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149931280 is an abundant number, since it is smaller than the sum of its proper divisors (217009520).

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

149931280 is a wasteful number, since it uses less digits than its factorization.

149931280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98671 (or 98665 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 149931280 is about 12244.6429102690. The cubic root of 149931280 is about 531.2481323118.

The spelling of 149931280 in words is "one hundred forty-nine million, nine hundred thirty-one thousand, two hundred eighty".