30014640 has 60 divisors (see below), whose sum is σ = 100801584. Its totient is φ = 8003712.

The previous prime is 30014617. The next prime is 30014651. The reversal of 30014640 is 4641003.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×30014640² = 1801757228659200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20124 + ... + 21563.

Almost surely, 2^30014640 is an apocalyptic number.

30014640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30014640 is an abundant number, since it is smaller than the sum of its proper divisors (70786944).

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

30014640 is a wasteful number, since it uses less digits than its factorization.

30014640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41706 (or 41697 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30014640 is about 5478.5618550857. The cubic root of 30014640 is about 310.7737866912.

Adding to 30014640 its reverse (4641003), we get a palindrome (34655643).

The spelling of 30014640 in words is "thirty million, fourteen thousand, six hundred forty".