30153144 has 32 divisors (see below), whose sum is σ = 86152320. Its totient is φ = 8615136.

The previous prime is 30153143. The next prime is 30153181. The reversal of 30153144 is 44135103.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 30153144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30153143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89574 + ... + 89909.

It is an arithmetic number, because the mean of its divisors is an integer number (2692260).

Almost surely, 2^30153144 is an apocalyptic number.

It is an amenable number.

30153144 is an abundant number, since it is smaller than the sum of its proper divisors (55999176).

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

30153144 is a wasteful number, since it uses less digits than its factorization.

30153144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179499 (or 179495 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30153144 is about 5491.1878496369. The cubic root of 30153144 is about 311.2510801401.

Adding to 30153144 its reverse (44135103), we get a palindrome (74288247).

The spelling of 30153144 in words is "thirty million, one hundred fifty-three thousand, one hundred forty-four".