20565034 has 16 divisors (see below), whose sum is σ = 35388288. Its totient is φ = 8780112.

The previous prime is 20565001. The next prime is 20565073. The reversal of 20565034 is 43056502.

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, 1227 + ... + 6529.

It is an arithmetic number, because the mean of its divisors is an integer number (2211768).

Almost surely, 2^20565034 is an apocalyptic number.

20565034 is a deficient number, since it is larger than the sum of its proper divisors (14823254).

20565034 is a wasteful number, since it uses less digits than its factorization.

20565034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5589.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20565034 is about 4534.8686860812. The cubic root of 20565034 is about 273.9742903044.

The spelling of 20565034 in words is "twenty million, five hundred sixty-five thousand, thirty-four".