30661426 has 4 divisors (see below), whose sum is σ = 45992142. Its totient is φ = 15330712.

The previous prime is 30661403. The next prime is 30661457. The reversal of 30661426 is 62416603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29757025 + 904401 = 5455^2 + 951^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30661394 and 30661403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7665355 + ... + 7665358.

Almost surely, 2^30661426 is an apocalyptic number.

30661426 is a deficient number, since it is larger than the sum of its proper divisors (15330716).

30661426 is a wasteful number, since it uses less digits than its factorization.

30661426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15330715.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 30661426 is about 5537.2760451327. The cubic root of 30661426 is about 312.9902312990.

The spelling of 30661426 in words is "thirty million, six hundred sixty-one thousand, four hundred twenty-six".