152540440 has 64 divisors (see below), whose sum is σ = 371498400. Its totient is φ = 56036352.

The previous prime is 152540387. The next prime is 152540467. The reversal of 152540440 is 44045251.

It is a happy number.

152540440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 120531 + ... + 121789.

Almost surely, 2^152540440 is an apocalyptic number.

152540440 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 152540440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185749200).

152540440 is an abundant number, since it is smaller than the sum of its proper divisors (218957960).

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

152540440 is a wasteful number, since it uses less digits than its factorization.

152540440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 152540440 is about 12350.7262944331. The cubic root of 152540440 is about 534.3120864113.

Adding to 152540440 its reverse (44045251), we get a palindrome (196585691).

The spelling of 152540440 in words is "one hundred fifty-two million, five hundred forty thousand, four hundred forty".