151233220 has 24 divisors (see below), whose sum is σ = 317850624. Its totient is φ = 60443616.

The previous prime is 151233209. The next prime is 151233239. The reversal of 151233220 is 22332151.

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, 30987 + ... + 35533.

It is an arithmetic number, because the mean of its divisors is an integer number (13243776).

Almost surely, 2^151233220 is an apocalyptic number.

151233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151233220 is an abundant number, since it is smaller than the sum of its proper divisors (166617404).

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

151233220 is a wasteful number, since it uses less digits than its factorization.

151233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219 (or 6217 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 151233220 is about 12297.6916533145. The cubic root of 151233220 is about 532.7814142876.

Adding to 151233220 its reverse (22332151), we get a palindrome (173565371).

It can be divided in two parts, 15 and 1233220, that added together give a triangular number (1233235 = T₁₅₇₀).

The spelling of 151233220 in words is "one hundred fifty-one million, two hundred thirty-three thousand, two hundred twenty".