30047690 has 16 divisors (see below), whose sum is σ = 54645192. Its totient is φ = 11894784.

The previous prime is 30047671. The next prime is 30047701. The reversal of 30047690 is 9674003.

It can be written as a sum of positive squares in 4 ways, for example, as 29735209 + 312481 = 5453^2 + 559^2 .

It is a super-2 number, since 2×30047690² = 1805727348672200, which contains 22 as substring.

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, 14519 + ... + 16458.

Almost surely, 2^30047690 is an apocalyptic number.

30047690 is a deficient number, since it is larger than the sum of its proper divisors (24597502).

30047690 is a wasteful number, since it uses less digits than its factorization.

30047690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31081.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30047690 is about 5481.5773277406. The cubic root of 30047690 is about 310.8878122248.

The spelling of 30047690 in words is "thirty million, forty-seven thousand, six hundred ninety".