147312440 has 64 divisors (see below), whose sum is σ = 368465760. Its totient is φ = 52549120.

The previous prime is 147312427. The next prime is 147312449. The reversal of 147312440 is 44213741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147312449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20162 + ... + 26478.

Almost surely, 2^147312440 is an apocalyptic number.

147312440 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 147312440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184232880).

147312440 is an abundant number, since it is smaller than the sum of its proper divisors (221153320).

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

147312440 is a wasteful number, since it uses less digits than its factorization.

147312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6392 (or 6388 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 147312440 is about 12137.2336222057. The cubic root of 147312440 is about 528.1368542558.

It can be divided in two parts, 14731 and 2440, that added together give a palindrome (17171).

The spelling of 147312440 in words is "one hundred forty-seven million, three hundred twelve thousand, four hundred forty".