30213724 has 12 divisors (see below), whose sum is σ = 55657000. Its totient is φ = 14311728.

The previous prime is 30213707. The next prime is 30213739. The reversal of 30213724 is 42731203.

It is a junction number, because it is equal to n+sod(n) for n = 30213695 and 30213704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198699 + ... + 198850.

Almost surely, 2^30213724 is an apocalyptic number.

It is an amenable number.

30213724 is a deficient number, since it is larger than the sum of its proper divisors (25443276).

30213724 is a wasteful number, since it uses less digits than its factorization.

30213724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397572 (or 397570 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30213724 is about 5496.7011925336. The cubic root of 30213724 is about 311.4593832064.

Adding to 30213724 its reverse (42731203), we get a palindrome (72944927).

The spelling of 30213724 in words is "thirty million, two hundred thirteen thousand, seven hundred twenty-four".