30249620 has 12 divisors (see below), whose sum is σ = 63524244. Its totient is φ = 12099840.

The previous prime is 30249619. The next prime is 30249641. The reversal of 30249620 is 2694203.

It can be written as a sum of positive squares in 2 ways, for example, as 3334276 + 26915344 = 1826^2 + 5188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30249620.

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, 756221 + ... + 756260.

It is an arithmetic number, because the mean of its divisors is an integer number (5293687).

Almost surely, 2^30249620 is an apocalyptic number.

It is an amenable number.

30249620 is an abundant number, since it is smaller than the sum of its proper divisors (33274624).

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

30249620 is a wasteful number, since it uses less digits than its factorization.

30249620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512490 (or 1512488 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30249620 is about 5499.9654544370. The cubic root of 30249620 is about 311.5826795087.

The spelling of 30249620 in words is "thirty million, two hundred forty-nine thousand, six hundred twenty".