30542520 has 64 divisors (see below), whose sum is σ = 92160000. Its totient is φ = 8097408.

The previous prime is 30542507. The next prime is 30542531. The reversal of 30542520 is 2524503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23241 + ... + 24519.

It is an arithmetic number, because the mean of its divisors is an integer number (1440000).

Almost surely, 2^30542520 is an apocalyptic number.

30542520 is a gapful number since it is divisible by the number (30) 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 30542520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46080000).

30542520 is an abundant number, since it is smaller than the sum of its proper divisors (61617480).

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

30542520 is a wasteful number, since it uses less digits than its factorization.

30542520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 30542520 is about 5526.5287477765. The cubic root of 30542520 is about 312.5851117504.

The spelling of 30542520 in words is "thirty million, five hundred forty-two thousand, five hundred twenty".