20744130 has 32 divisors (see below), whose sum is σ = 54312768. Its totient is φ = 5028800.

The previous prime is 20744111. The next prime is 20744167. The reversal of 20744130 is 3144702.

It is a junction number, because it is equal to n+sod(n) for n = 20744097 and 20744106.

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, 31101 + ... + 31760.

It is an arithmetic number, because the mean of its divisors is an integer number (1697274).

Almost surely, 2^20744130 is an apocalyptic number.

20744130 is an abundant number, since it is smaller than the sum of its proper divisors (33568638).

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

20744130 is a wasteful number, since it uses less digits than its factorization.

20744130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62882.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20744130 is about 4554.5724277917. The cubic root of 20744130 is about 274.7673183316.

Adding to 20744130 its reverse (3144702), we get a palindrome (23888832).

The spelling of 20744130 in words is "twenty million, seven hundred forty-four thousand, one hundred thirty".