149858220 has 24 divisors (see below), whose sum is σ = 419603184. Its totient is φ = 39962176.

The previous prime is 149858207. The next prime is 149858237. The reversal of 149858220 is 22858941.

It is a super-2 number, since 2×149858220² = 44914972203136800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248759 + ... + 1248878.

It is an arithmetic number, because the mean of its divisors is an integer number (17483466).

Almost surely, 2^149858220 is an apocalyptic number.

149858220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149858220 is an abundant number, since it is smaller than the sum of its proper divisors (269744964).

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

149858220 is a wasteful number, since it uses less digits than its factorization.

149858220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497649 (or 2497647 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 149858220 is about 12241.6592012684. The cubic root of 149858220 is about 531.1618276735.

The spelling of 149858220 in words is "one hundred forty-nine million, eight hundred fifty-eight thousand, two hundred twenty".