30744420 has 96 divisors (see below), whose sum is σ = 99864576. Its totient is φ = 6921600.

The previous prime is 30744407. The next prime is 30744421. The reversal of 30744420 is 2444703.

It is a super-2 number, since 2×30744420² = 1890438722272800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30744421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29305 + ... + 30335.

It is an arithmetic number, because the mean of its divisors is an integer number (1040256).

Almost surely, 2^30744420 is an apocalyptic number.

30744420 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 30744420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49932288).

30744420 is an abundant number, since it is smaller than the sum of its proper divisors (69120156).

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

30744420 is a wasteful number, since it uses less digits than its factorization.

30744420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 30744420 is about 5544.7650987215. The cubic root of 30744420 is about 313.2723763518.

The spelling of 30744420 in words is "thirty million, seven hundred forty-four thousand, four hundred twenty".