30691400 has 24 divisors (see below), whose sum is σ = 71357970. Its totient is φ = 12276480.

The previous prime is 30691393. The next prime is 30691417. The reversal of 30691400 is 419603.

It can be written as a sum of positive squares in 3 ways, for example, as 29441476 + 1249924 = 5426^2 + 1118^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76529 + ... + 76928.

Almost surely, 2^30691400 is an apocalyptic number.

It is an amenable number.

30691400 is an abundant number, since it is smaller than the sum of its proper divisors (40666570).

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

30691400 is a wasteful number, since it uses less digits than its factorization.

30691400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153473 (or 153464 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30691400 is about 5539.9819494291. The cubic root of 30691400 is about 313.0921890898.

The spelling of 30691400 in words is "thirty million, six hundred ninety-one thousand, four hundred".