153230440 has 64 divisors (see below), whose sum is σ = 395928000. Its totient is φ = 52784640.

The previous prime is 153230419. The next prime is 153230471. The reversal of 153230440 is 44032351.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805 + ... + 17524.

It is an arithmetic number, because the mean of its divisors is an integer number (6186375).

Almost surely, 2^153230440 is an apocalyptic number.

153230440 is a gapful number since it is divisible by the number (10) 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 153230440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197964000).

153230440 is an abundant number, since it is smaller than the sum of its proper divisors (242697560).

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

153230440 is a wasteful number, since it uses less digits than its factorization.

153230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18370 (or 18366 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 153230440 is about 12378.6283569707. The cubic root of 153230440 is about 535.1165088208.

Adding to 153230440 its reverse (44032351), we get a palindrome (197262791).

The spelling of 153230440 in words is "one hundred fifty-three million, two hundred thirty thousand, four hundred forty".