30643480 has 32 divisors (see below), whose sum is σ = 78798240. Its totient is φ = 10506240.

The previous prime is 30643471. The next prime is 30643493. The reversal of 30643480 is 8434603.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 54441 + ... + 55000.

It is an arithmetic number, because the mean of its divisors is an integer number (2462445).

Almost surely, 2^30643480 is an apocalyptic number.

It is an amenable number.

30643480 is an abundant number, since it is smaller than the sum of its proper divisors (48154760).

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

30643480 is a wasteful number, since it uses less digits than its factorization.

30643480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109459 (or 109455 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 30643480 is about 5535.6553360917. The cubic root of 30643480 is about 312.9291554388.

The spelling of 30643480 in words is "thirty million, six hundred forty-three thousand, four hundred eighty".