20617402 has 16 divisors (see below), whose sum is σ = 33620832. Its totient is φ = 9425520.

The previous prime is 20617357. The next prime is 20617411. The reversal of 20617402 is 20471602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (2101302).

Almost surely, 2^20617402 is an apocalyptic number.

20617402 is a deficient number, since it is larger than the sum of its proper divisors (13003430).

20617402 is a wasteful number, since it uses less digits than its factorization.

20617402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20617402 is about 4540.6389418231. The cubic root of 20617402 is about 274.2066478814.

The spelling of 20617402 in words is "twenty million, six hundred seventeen thousand, four hundred two".