30693140 has 12 divisors (see below), whose sum is σ = 64455636. Its totient is φ = 12277248.

The previous prime is 30693139. The next prime is 30693199. The reversal of 30693140 is 4139603.

It can be written as a sum of positive squares in 2 ways, for example, as 20376196 + 10316944 = 4514^2 + 3212^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767309 + ... + 767348.

It is an arithmetic number, because the mean of its divisors is an integer number (5371303).

Almost surely, 2^30693140 is an apocalyptic number.

It is an amenable number.

30693140 is an abundant number, since it is smaller than the sum of its proper divisors (33762496).

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

30693140 is a wasteful number, since it uses less digits than its factorization.

30693140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534666 (or 1534664 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 30693140 is about 5540.1389874262. The cubic root of 30693140 is about 313.0981057322.

The spelling of 30693140 in words is "thirty million, six hundred ninety-three thousand, one hundred forty".