155240232 has 96 divisors (see below), whose sum is σ = 456282720. Its totient is φ = 43881600.

The previous prime is 155240213. The next prime is 155240251. The reversal of 155240232 is 232042551.

It is an interprime number because it is at equal distance from previous prime (155240213) and next prime (155240251).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118123 + ... + 119429.

It is an arithmetic number, because the mean of its divisors is an integer number (4752945).

Almost surely, 2^155240232 is an apocalyptic number.

155240232 is a gapful number since it is divisible by the number (12) 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 155240232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228141360).

155240232 is an abundant number, since it is smaller than the sum of its proper divisors (301042488).

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

155240232 is a wasteful number, since it uses less digits than its factorization.

155240232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 155240232 is about 12459.5438118737. The cubic root of 155240232 is about 537.4459085282.

Adding to 155240232 its reverse (232042551), we get a palindrome (387282783).

The spelling of 155240232 in words is "one hundred fifty-five million, two hundred forty thousand, two hundred thirty-two".