149988780 has 48 divisors (see below), whose sum is σ = 466633440. Its totient is φ = 39996864.

The previous prime is 149988767. The next prime is 149988799. The reversal of 149988780 is 87889941.

149988780 is a `hidden beast` number, since 1 + 499 + 88 + 78 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 138339 + ... + 139418.

It is an arithmetic number, because the mean of its divisors is an integer number (9721530).

Almost surely, 2^149988780 is an apocalyptic number.

149988780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149988780 is an abundant number, since it is smaller than the sum of its proper divisors (316644660).

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

149988780 is a wasteful number, since it uses less digits than its factorization.

149988780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277775 (or 277767 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 149988780 is about 12246.9906507680. The cubic root of 149988780 is about 531.3160364508.

The spelling of 149988780 in words is "one hundred forty-nine million, nine hundred eighty-eight thousand, seven hundred eighty".