149514820 has 96 divisors (see below), whose sum is σ = 390394368. Its totient is φ = 46835712.

The previous prime is 149514803. The next prime is 149514821. The reversal of 149514820 is 28415941.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (149514821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205297 + ... + 206023.

It is an arithmetic number, because the mean of its divisors is an integer number (4066608).

Almost surely, 2^149514820 is an apocalyptic number.

149514820 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 149514820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195197184).

149514820 is an abundant number, since it is smaller than the sum of its proper divisors (240879548).

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

149514820 is a wasteful number, since it uses less digits than its factorization.

149514820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 149514820 is about 12227.6252804868. The cubic root of 149514820 is about 530.7557983987.

The spelling of 149514820 in words is "one hundred forty-nine million, five hundred fourteen thousand, eight hundred twenty".