152021144 has 16 divisors (see below), whose sum is σ = 310952520. Its totient is φ = 69100480.

The previous prime is 152021143. The next prime is 152021173. The reversal of 152021144 is 441120251.

It is a happy number.

It is a super-2 number, since 2×152021144² = 46220856446137472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152021143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863669 + ... + 863844.

Almost surely, 2^152021144 is an apocalyptic number.

It is an amenable number.

152021144 is an abundant number, since it is smaller than the sum of its proper divisors (158931376).

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

152021144 is a wasteful number, since it uses less digits than its factorization.

152021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727530 (or 1727526 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 152021144 is about 12329.6854785513. The cubic root of 152021144 is about 533.7050745113.

Adding to 152021144 its reverse (441120251), we get a palindrome (593141395).

The spelling of 152021144 in words is "one hundred fifty-two million, twenty-one thousand, one hundred forty-four".