149029920 has 288 divisors, whose sum is σ = 577886400. Its totient is φ = 34670592.

The previous prime is 149029919. The next prime is 149029943. The reversal of 149029920 is 29920941.

It is a tau number, because it is divible by the number of its divisors (288).

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 (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 355471 + ... + 355889.

It is an arithmetic number, because the mean of its divisors is an integer number (2006550).

Almost surely, 2^149029920 is an apocalyptic number.

149029920 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 149029920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288943200).

149029920 is an abundant number, since it is smaller than the sum of its proper divisors (428856480).

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

149029920 is a wasteful number, since it uses less digits than its factorization.

149029920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 149029920 is about 12207.7811251677. The cubic root of 149029920 is about 530.1814022455.

The spelling of 149029920 in words is "one hundred forty-nine million, twenty-nine thousand, nine hundred twenty".