152031440 has 80 divisors (see below), whose sum is σ = 398117376. Its totient is φ = 53491200.

The previous prime is 152031437. The next prime is 152031461. The reversal of 152031440 is 44130251.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×152031440² = 46227117496947200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 24494 + ... + 30066.

Almost surely, 2^152031440 is an apocalyptic number.

152031440 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 152031440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199058688).

152031440 is an abundant number, since it is smaller than the sum of its proper divisors (246085936).

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

152031440 is a wasteful number, since it uses less digits than its factorization.

152031440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5622 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 152031440 is about 12330.1030003808. The cubic root of 152031440 is about 533.7171230620.

Adding to 152031440 its reverse (44130251), we get a palindrome (196161691).

The spelling of 152031440 in words is "one hundred fifty-two million, thirty-one thousand, four hundred forty".