20893740 has 48 divisors (see below), whose sum is σ = 66861312. Its totient is φ = 4775616.

The previous prime is 20893739. The next prime is 20893753. The reversal of 20893740 is 4739802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24454 + ... + 25293.

It is an arithmetic number, because the mean of its divisors is an integer number (1392944).

Almost surely, 2^20893740 is an apocalyptic number.

20893740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20893740 is an abundant number, since it is smaller than the sum of its proper divisors (45967572).

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

20893740 is a wasteful number, since it uses less digits than its factorization.

20893740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49766 (or 49764 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20893740 is about 4570.9670749197. The cubic root of 20893740 is about 275.4262920089.

The spelling of 20893740 in words is "twenty million, eight hundred ninety-three thousand, seven hundred forty".