20845488 has 30 divisors (see below), whose sum is σ = 53932684. Its totient is φ = 6937952.

The previous prime is 20845481. The next prime is 20845499. The reversal of 20845488 is 88454802.

It is not an unprimeable number, because it can be changed into a prime (20845481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31303 + ... + 31961.

Almost surely, 2^20845488 is an apocalyptic number.

It is an amenable number.

20845488 is an abundant number, since it is smaller than the sum of its proper divisors (33087196).

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

20845488 is an frugal number, since it uses more digits than its factorization.

20845488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 20845488 is about 4565.6859287516. The cubic root of 20845488 is about 275.2141054380.

The spelling of 20845488 in words is "twenty million, eight hundred forty-five thousand, four hundred eighty-eight".