30402724 has 24 divisors (see below), whose sum is σ = 58913568. Its totient is φ = 13611840.

The previous prime is 30402721. The next prime is 30402739. The reversal of 30402724 is 42720403.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 30402695 and 30402704.

It is not an unprimeable number, because it can be changed into a prime (30402721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2209 + ... + 8104.

It is an arithmetic number, because the mean of its divisors is an integer number (2454732).

Almost surely, 2^30402724 is an apocalyptic number.

It is an amenable number.

30402724 is a deficient number, since it is larger than the sum of its proper divisors (28510844).

30402724 is a wasteful number, since it uses less digits than its factorization.

30402724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10395 (or 10393 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 30402724 is about 5513.8665199658. The cubic root of 30402724 is about 312.1074717421.

The spelling of 30402724 in words is "thirty million, four hundred two thousand, seven hundred twenty-four".