30697190 has 16 divisors (see below), whose sum is σ = 55337040. Its totient is φ = 12260640.

The previous prime is 30697187. The next prime is 30697207. The reversal of 30697190 is 9179603.

It is a super-2 number, since 2×30697190² = 1884634947792200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30697190.

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, 6341 + ... + 10079.

It is an arithmetic number, because the mean of its divisors is an integer number (3458565).

Almost surely, 2^30697190 is an apocalyptic number.

30697190 is a deficient number, since it is larger than the sum of its proper divisors (24639850).

30697190 is a wasteful number, since it uses less digits than its factorization.

30697190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 30697190 is about 5540.5044896652. The cubic root of 30697190 is about 313.1118763615. Note that the first 3 decimals are identical.

The spelling of 30697190 in words is "thirty million, six hundred ninety-seven thousand, one hundred ninety".