23420090 has 16 divisors (see below), whose sum is σ = 42218280. Its totient is φ = 9354240.

The previous prime is 23420087. The next prime is 23420107. The reversal of 23420090 is 9002432.

It can be written as a sum of positive squares in 4 ways, for example, as 3644281 + 19775809 = 1909^2 + 4447^2 .

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, 8030 + ... + 10550.

Almost surely, 2^23420090 is an apocalyptic number.

23420090 is a deficient number, since it is larger than the sum of its proper divisors (18798190).

23420090 is a wasteful number, since it uses less digits than its factorization.

23420090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 23420090 is about 4839.4307516484. The cubic root of 23420090 is about 286.1076827300.

The spelling of 23420090 in words is "twenty-three million, four hundred twenty thousand, ninety".