30452840 has 64 divisors (see below), whose sum is σ = 75936960. Its totient is φ = 10897920.

The previous prime is 30452837. The next prime is 30452857. The reversal of 30452840 is 4825403.

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, 28964 + ... + 29996.

It is an arithmetic number, because the mean of its divisors is an integer number (1186515).

Almost surely, 2^30452840 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 30452840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37968480).

30452840 is an abundant number, since it is smaller than the sum of its proper divisors (45484120).

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

30452840 is a wasteful number, since it uses less digits than its factorization.

30452840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 30452840 is about 5518.4091910622. The cubic root of 30452840 is about 312.2788707629.

It can be divided in two parts, 3045 and 2840, that added together give a palindrome (5885).

The spelling of 30452840 in words is "thirty million, four hundred fifty-two thousand, eight hundred forty".