30972270 has 32 divisors (see below), whose sum is σ = 84953088. Its totient is φ = 7079328.

The previous prime is 30972257. The next prime is 30972281. The reversal of 30972270 is 7227903.

It is a super-3 number, since 3×30972270³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73534 + ... + 73953.

It is an arithmetic number, because the mean of its divisors is an integer number (2654784).

Almost surely, 2^30972270 is an apocalyptic number.

30972270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30972270 is an abundant number, since it is smaller than the sum of its proper divisors (53980818).

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

30972270 is a wasteful number, since it uses less digits than its factorization.

30972270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147504.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 30972270 is about 5565.2735781810. The cubic root of 30972270 is about 314.0443701076.

The spelling of 30972270 in words is "thirty million, nine hundred seventy-two thousand, two hundred seventy".