20506862 has 16 divisors (see below), whose sum is σ = 32698080. Its totient is φ = 9645664.

The previous prime is 20506861. The next prime is 20506873. The reversal of 20506862 is 26860502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20506861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8783 + ... + 10869.

It is an arithmetic number, because the mean of its divisors is an integer number (2043630).

Almost surely, 2^20506862 is an apocalyptic number.

20506862 is a deficient number, since it is larger than the sum of its proper divisors (12191218).

20506862 is an equidigital number, since it uses as much as digits as its factorization.

20506862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20506862 is about 4528.4502867979. The cubic root of 20506862 is about 273.7157173696.

The spelling of 20506862 in words is "twenty million, five hundred six thousand, eight hundred sixty-two".