151220232 has 48 divisors (see below), whose sum is σ = 422772480. Its totient is φ = 48780000.

The previous prime is 151220231. The next prime is 151220317. The reversal of 151220232 is 232022151.

It is a super-2 number, since 2×151220232² = 45735117132267648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (151220231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31644 + ... + 36107.

It is an arithmetic number, because the mean of its divisors is an integer number (8807760).

Almost surely, 2^151220232 is an apocalyptic number.

151220232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

151220232 is an abundant number, since it is smaller than the sum of its proper divisors (271552248).

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

151220232 is a wasteful number, since it uses less digits than its factorization.

151220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67794 (or 67787 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 151220232 is about 12297.1635753941. The cubic root of 151220232 is about 532.7661619881.

Adding to 151220232 its reverse (232022151), we get a palindrome (383242383).

The spelling of 151220232 in words is "one hundred fifty-one million, two hundred twenty thousand, two hundred thirty-two".