149868840 has 64 divisors (see below), whose sum is σ = 490484160. Its totient is φ = 36331520.

The previous prime is 149868799. The next prime is 149868841. The reversal of 149868840 is 48868941.

It is a self number, because there is not a number n which added to its sum of digits gives 149868840.

It is not an unprimeable number, because it can be changed into a prime (149868841) 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 15 ways as a sum of consecutive naturals, for example, 55449 + ... + 58088.

It is an arithmetic number, because the mean of its divisors is an integer number (7663815).

Almost surely, 2^149868840 is an apocalyptic number.

149868840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149868840 is an abundant number, since it is smaller than the sum of its proper divisors (340615320).

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

149868840 is a wasteful number, since it uses less digits than its factorization.

149868840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113562 (or 113558 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 149868840 is about 12242.0929583140. The cubic root of 149868840 is about 531.1743746560.

The spelling of 149868840 in words is "one hundred forty-nine million, eight hundred sixty-eight thousand, eight hundred forty".