30864421 has 8 divisors (see below), whose sum is σ = 35800640. Its totient is φ = 26059968.

The previous prime is 30864419. The next prime is 30864443. The reversal of 30864421 is 12446803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30864421 - 2¹ = 30864419 is a prime.

It is a super-2 number, since 2×30864421² = 1905224967330482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30864421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30864451) 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, 32436 + ... + 33373.

It is an arithmetic number, because the mean of its divisors is an integer number (4475080).

Almost surely, 2^30864421 is an apocalyptic number.

It is an amenable number.

30864421 is a deficient number, since it is larger than the sum of its proper divisors (4936219).

30864421 is an equidigital number, since it uses as much as digits as its factorization.

30864421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65883.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 30864421 is about 5555.5756677414. The cubic root of 30864421 is about 313.6794333449.

The spelling of 30864421 in words is "thirty million, eight hundred sixty-four thousand, four hundred twenty-one".