149394520 has 64 divisors (see below), whose sum is σ = 368375040. Its totient is φ = 54076800.

The previous prime is 149394481. The next prime is 149394563. The reversal of 149394520 is 25493941.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 149394520.

It is a congruent number.

It is an unprimeable number.

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, 115075 + ... + 116365.

It is an arithmetic number, because the mean of its divisors is an integer number (5755860).

Almost surely, 2^149394520 is an apocalyptic number.

149394520 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 149394520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184187520).

149394520 is an abundant number, since it is smaller than the sum of its proper divisors (218980520).

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

149394520 is a wasteful number, since it uses less digits than its factorization.

149394520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 149394520 is about 12222.7051015722. The cubic root of 149394520 is about 530.6134110537.

The spelling of 149394520 in words is "one hundred forty-nine million, three hundred ninety-four thousand, five hundred twenty".