30542232 has 64 divisors (see below), whose sum is σ = 87966720. Its totient is φ = 8656128.

The previous prime is 30542207. The next prime is 30542243. The reversal of 30542232 is 23224503.

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

It is a junction number, because it is equal to n+sod(n) for n = 30542199 and 30542208.

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, 22353 + ... + 23679.

It is an arithmetic number, because the mean of its divisors is an integer number (1374480).

Almost surely, 2^30542232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30542232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43983360).

30542232 is an abundant number, since it is smaller than the sum of its proper divisors (57424488).

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

30542232 is a wasteful number, since it uses less digits than its factorization.

30542232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30542232 is about 5526.5026915763. The cubic root of 30542232 is about 312.5841292426.

Adding to 30542232 its reverse (23224503), we get a palindrome (53766735).

The spelling of 30542232 in words is "thirty million, five hundred forty-two thousand, two hundred thirty-two".