22091402 has 16 divisors (see below), whose sum is σ = 33955200. Its totient is φ = 10776480.

The previous prime is 22091389. The next prime is 22091411. The reversal of 22091402 is 20419022.

22091402 = T₇₀₈ + T₇₀₉ + ... + T₇₈₆.

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, 13277 + ... + 14847.

It is an arithmetic number, because the mean of its divisors is an integer number (2122200).

Almost surely, 2^22091402 is an apocalyptic number.

22091402 is a deficient number, since it is larger than the sum of its proper divisors (11863798).

22091402 is a wasteful number, since it uses less digits than its factorization.

22091402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22091402 is about 4700.1491465697. The cubic root of 22091402 is about 280.5914453856.

The spelling of 22091402 in words is "twenty-two million, ninety-one thousand, four hundred two".