30029440 has 64 divisors (see below), whose sum is σ = 82056960. Its totient is φ = 10294272.

The previous prime is 30029431. The next prime is 30029453. The reversal of 30029440 is 4492003.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (1282140).

Almost surely, 2^30029440 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 30029440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41028480).

30029440 is an abundant number, since it is smaller than the sum of its proper divisors (52027520).

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

30029440 is an equidigital number, since it uses as much as digits as its factorization.

30029440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729 (or 6717 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30029440 is about 5479.9124080591. The cubic root of 30029440 is about 310.8248583933.

The spelling of 30029440 in words is "thirty million, twenty-nine thousand, four hundred forty".