20455746 has 16 divisors (see below), whose sum is σ = 42017664. Its totient is φ = 6634224.

The previous prime is 20455711. The next prime is 20455823. The reversal of 20455746 is 64755402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45850 + ... + 46293.

It is an arithmetic number, because the mean of its divisors is an integer number (2626104).

Almost surely, 2^20455746 is an apocalyptic number.

20455746 is an abundant number, since it is smaller than the sum of its proper divisors (21561918).

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

20455746 is a wasteful number, since it uses less digits than its factorization.

20455746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92185.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 20455746 is about 4522.8028920129. The cubic root of 20455746 is about 273.4881042299.

The spelling of 20455746 in words is "twenty million, four hundred fifty-five thousand, seven hundred forty-six".