30789490 has 16 divisors (see below), whose sum is σ = 55484352. Its totient is φ = 12301744.

The previous prime is 30789487. The next prime is 30789523. The reversal of 30789490 is 9498703.

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 7 ways as a sum of consecutive naturals, for example, 15747 + ... + 17593.

It is an arithmetic number, because the mean of its divisors is an integer number (3467772).

Almost surely, 2^30789490 is an apocalyptic number.

30789490 is a deficient number, since it is larger than the sum of its proper divisors (24694862).

30789490 is a wasteful number, since it uses less digits than its factorization.

30789490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 30789490 is about 5548.8278041403. The cubic root of 30789490 is about 313.4253828946.

The spelling of 30789490 in words is "thirty million, seven hundred eighty-nine thousand, four hundred ninety".