149872640 has 56 divisors (see below), whose sum is σ = 359770680. Its totient is φ = 59932672.

The previous prime is 149872621. The next prime is 149872643. The reversal of 149872640 is 46278941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149872643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39131 + ... + 42789.

Almost surely, 2^149872640 is an apocalyptic number.

149872640 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 149872640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179885340).

149872640 is an abundant number, since it is smaller than the sum of its proper divisors (209898040).

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

149872640 is an frugal number, since it uses more digits than its factorization.

149872640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3666 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 149872640 is about 12242.2481595498. The cubic root of 149872640 is about 531.1788640160.

The spelling of 149872640 in words is "one hundred forty-nine million, eight hundred seventy-two thousand, six hundred forty".