30621794 has 16 divisors (see below), whose sum is σ = 55582848. Its totient is φ = 12351552.

The previous prime is 30621781. The next prime is 30621823. The reversal of 30621794 is 49712603.

It is a self number, because there is not a number n which added to its sum of digits gives 30621794.

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, 64094 + ... + 64569.

It is an arithmetic number, because the mean of its divisors is an integer number (3473928).

Almost surely, 2^30621794 is an apocalyptic number.

30621794 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30621794 is a deficient number, since it is larger than the sum of its proper divisors (24961054).

30621794 is a wasteful number, since it uses less digits than its factorization.

30621794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128689.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 30621794 is about 5533.6962330797. The cubic root of 30621794 is about 312.8553193610.

The spelling of 30621794 in words is "thirty million, six hundred twenty-one thousand, seven hundred ninety-four".