30993270 has 64 divisors (see below), whose sum is σ = 92745216. Its totient is φ = 6439680.

The previous prime is 30993269. The next prime is 30993289. The reversal of 30993270 is 7239903.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4399 + ... + 9018.

It is an arithmetic number, because the mean of its divisors is an integer number (1449144).

Almost surely, 2^30993270 is an apocalyptic number.

30993270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30993270 is an abundant number, since it is smaller than the sum of its proper divisors (61751946).

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

30993270 is a wasteful number, since it uses less digits than its factorization.

30993270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13445.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 30993270 is about 5567.1599581833. The cubic root of 30993270 is about 314.1153308070.

The spelling of 30993270 in words is "thirty million, nine hundred ninety-three thousand, two hundred seventy".