30420664 has 8 divisors (see below), whose sum is σ = 57038760. Its totient is φ = 15210328.

The previous prime is 30420659. The next prime is 30420673. The reversal of 30420664 is 46602403.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901284 + ... + 1901299.

It is an arithmetic number, because the mean of its divisors is an integer number (7129845).

Almost surely, 2^30420664 is an apocalyptic number.

It is an amenable number.

30420664 is a deficient number, since it is larger than the sum of its proper divisors (26618096).

30420664 is a wasteful number, since it uses less digits than its factorization.

30420664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802589 (or 3802585 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 30420664 is about 5515.4930876577. The cubic root of 30420664 is about 312.1688489955.

The spelling of 30420664 in words is "thirty million, four hundred twenty thousand, six hundred sixty-four".