30213444 has 24 divisors (see below), whose sum is σ = 73563840. Its totient is φ = 9633184.

The previous prime is 30213431. The next prime is 30213493. The reversal of 30213444 is 44431203.

It is a super-2 number, since 2×30213444² = 1825704396682272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30213444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54459 + ... + 55010.

It is an arithmetic number, because the mean of its divisors is an integer number (3065160).

Almost surely, 2^30213444 is an apocalyptic number.

It is an amenable number.

30213444 is an abundant number, since it is smaller than the sum of its proper divisors (43350396).

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

30213444 is a wasteful number, since it uses less digits than its factorization.

30213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109499 (or 109497 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30213444 is about 5496.6757226527. The cubic root of 30213444 is about 311.4584210731.

Adding to 30213444 its reverse (44431203), we get a palindrome (74644647).

The spelling of 30213444 in words is "thirty million, two hundred thirteen thousand, four hundred forty-four".