149219220 has 24 divisors (see below), whose sum is σ = 417813984. Its totient is φ = 39791776.

The previous prime is 149219177. The next prime is 149219243. The reversal of 149219220 is 22912941.

It is a happy number.

149219220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1243434 + ... + 1243553.

It is an arithmetic number, because the mean of its divisors is an integer number (17408916).

Almost surely, 2^149219220 is an apocalyptic number.

149219220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149219220 is an abundant number, since it is smaller than the sum of its proper divisors (268594764).

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

149219220 is a wasteful number, since it uses less digits than its factorization.

149219220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486999 (or 2486997 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 149219220 is about 12215.5319163760. The cubic root of 149219220 is about 530.4057886753.

The spelling of 149219220 in words is "one hundred forty-nine million, two hundred nineteen thousand, two hundred twenty".