30474840 has 64 divisors (see below), whose sum is σ = 99740160. Its totient is φ = 7387520.

The previous prime is 30474823. The next prime is 30474859. The reversal of 30474840 is 4847403.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30474798 and 30474807.

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, 10224 + ... + 12863.

It is an arithmetic number, because the mean of its divisors is an integer number (1558440).

Almost surely, 2^30474840 is an apocalyptic number.

30474840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30474840 is an abundant number, since it is smaller than the sum of its proper divisors (69265320).

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

30474840 is a wasteful number, since it uses less digits than its factorization.

30474840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112 (or 23108 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 30474840 is about 5520.4021592634. The cubic root of 30474840 is about 312.3540523817.

It can be divided in two parts, 3047 and 4840, that added together give a palindrome (7887).

The spelling of 30474840 in words is "thirty million, four hundred seventy-four thousand, eight hundred forty".