20470746 has 16 divisors (see below), whose sum is σ = 41613408. Its totient is φ = 6711600.

The previous prime is 20470739. The next prime is 20470753. The reversal of 20470746 is 64707402.

It is an interprime number because it is at equal distance from previous prime (20470739) and next prime (20470753).

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, 27600 + ... + 28331.

It is an arithmetic number, because the mean of its divisors is an integer number (2600838).

Almost surely, 2^20470746 is an apocalyptic number.

20470746 is an abundant number, since it is smaller than the sum of its proper divisors (21142662).

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

20470746 is a wasteful number, since it uses less digits than its factorization.

20470746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55997.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20470746 is about 4524.4608518585. The cubic root of 20470746 is about 273.5549366208.

The spelling of 20470746 in words is "twenty million, four hundred seventy thousand, seven hundred forty-six".