149918400 has 252 divisors, whose sum is σ = 552754800. Its totient is φ = 38492160.

The previous prime is 149918381. The next prime is 149918411. The reversal of 149918400 is 4819941.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 35 ways as a sum of consecutive naturals, for example, 417421 + ... + 417779.

Almost surely, 2^149918400 is an apocalyptic number.

149918400 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 149918400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276377400).

149918400 is an abundant number, since it is smaller than the sum of its proper divisors (402836400).

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

149918400 is a wasteful number, since it uses less digits than its factorization.

149918400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 149918400 is about 12244.1169546848. The cubic root of 149918400 is about 531.2329194047.

The spelling of 149918400 in words is "one hundred forty-nine million, nine hundred eighteen thousand, four hundred".