30969690 has 32 divisors (see below), whose sum is σ = 75591360. Its totient is φ = 8118144.

The previous prime is 30969689. The next prime is 30969721. The reversal of 30969690 is 9696903.

It is a super-2 number, since 2×30969690² = 1918243397392200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 6979 + ... + 10518.

It is an arithmetic number, because the mean of its divisors is an integer number (2362230).

Almost surely, 2^30969690 is an apocalyptic number.

30969690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30969690 is an abundant number, since it is smaller than the sum of its proper divisors (44621670).

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

30969690 is a wasteful number, since it uses less digits than its factorization.

30969690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17566.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 30969690 is about 5565.0417788189. The cubic root of 30969690 is about 314.0356498666.

The spelling of 30969690 in words is "thirty million, nine hundred sixty-nine thousand, six hundred ninety".