20720410 has 16 divisors (see below), whose sum is σ = 38164896. Its totient is φ = 8095248.

The previous prime is 20720363. The next prime is 20720417. The reversal of 20720410 is 1402702.

It is not an unprimeable number, because it can be changed into a prime (20720417) 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, 23664 + ... + 24523.

It is an arithmetic number, because the mean of its divisors is an integer number (2385306).

Almost surely, 2^20720410 is an apocalyptic number.

20720410 is a deficient number, since it is larger than the sum of its proper divisors (17444486).

20720410 is a wasteful number, since it uses less digits than its factorization.

20720410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48237.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20720410 is about 4551.9677063881. The cubic root of 20720410 is about 274.6625502755.

The spelling of 20720410 in words is "twenty million, seven hundred twenty thousand, four hundred ten".