20041970 has 32 divisors (see below), whose sum is σ = 40545792. Its totient is φ = 7077312.

The previous prime is 20041969. The next prime is 20041981. The reversal of 20041970 is 7914002.

It is a super-2 number, since 2×20041970² = 803361122961800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (1267056).

Almost surely, 2^20041970 is an apocalyptic number.

20041970 is an abundant number, since it is smaller than the sum of its proper divisors (20503822).

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

20041970 is a wasteful number, since it uses less digits than its factorization.

20041970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20041970 is about 4476.8258844856. The cubic root of 20041970 is about 271.6315025099.

Adding to 20041970 its reverse (7914002), we get a palindrome (27955972).

The spelling of 20041970 in words is "twenty million, forty-one thousand, nine hundred seventy".