20746401 has 16 divisors (see below), whose sum is σ = 29964480. Its totient is φ = 12692160.

The previous prime is 20746393. The next prime is 20746417. The reversal of 20746401 is 10464702.

It is not a de Polignac number, because 20746401 - 2³ = 20746393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20746421) 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, 5590 + ... + 8528.

It is an arithmetic number, because the mean of its divisors is an integer number (1872780).

Almost surely, 2^20746401 is an apocalyptic number.

It is an amenable number.

20746401 is a deficient number, since it is larger than the sum of its proper divisors (9218079).

20746401 is a wasteful number, since it uses less digits than its factorization.

20746401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20746401 is about 4554.8217308694. The cubic root of 20746401 is about 274.7773448436. Note that the first 3 decimals are identical.

The spelling of 20746401 in words is "twenty million, seven hundred forty-six thousand, four hundred one".