20860923 has 16 divisors (see below), whose sum is σ = 29417472. Its totient is φ = 13128000.

The previous prime is 20860913. The next prime is 20860943. The reversal of 20860923 is 32906802.

It is not a de Polignac number, because 20860923 - 2⁸ = 20860667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20860913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078 + ... + 6548.

It is an arithmetic number, because the mean of its divisors is an integer number (1838592).

Almost surely, 2^20860923 is an apocalyptic number.

20860923 is a deficient number, since it is larger than the sum of its proper divisors (8556549).

20860923 is a wasteful number, since it uses less digits than its factorization.

20860923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20860923 is about 4567.3759424860. The cubic root of 20860923 is about 275.2820159245.

The spelling of 20860923 in words is "twenty million, eight hundred sixty thousand, nine hundred twenty-three".