20123946 has 24 divisors (see below), whose sum is σ = 43885764. Its totient is φ = 6664320.

The previous prime is 20123927. The next prime is 20123959. The reversal of 20123946 is 64932102.

It can be written as a sum of positive squares in 2 ways, for example, as 16719921 + 3404025 = 4089^2 + 1845^2 .

It is a super-2 number, since 2×20123946² = 809946405221832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 735 + ... + 6386.

Almost surely, 2^20123946 is an apocalyptic number.

20123946 is an abundant number, since it is smaller than the sum of its proper divisors (23761818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123946 is a wasteful number, since it uses less digits than its factorization.

20123946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7286 (or 7283 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20123946 is about 4485.9721354462. The cubic root of 20123946 is about 272.0013426260.

The spelling of 20123946 in words is "twenty million, one hundred twenty-three thousand, nine hundred forty-six".