20893738 has 8 divisors (see below), whose sum is σ = 31782240. Its totient is φ = 10299660.

The previous prime is 20893727. The next prime is 20893739. The reversal of 20893738 is 83739802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20893738² = 873096575225288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20893738.

It is not an unprimeable number, because it can be changed into a prime (20893739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73428 + ... + 73711.

It is an arithmetic number, because the mean of its divisors is an integer number (3972780).

Almost surely, 2^20893738 is an apocalyptic number.

20893738 is a deficient number, since it is larger than the sum of its proper divisors (10888502).

20893738 is a wasteful number, since it uses less digits than its factorization.

20893738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147212.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 20893738 is about 4570.9668561476. The cubic root of 20893738 is about 275.4262832207.

The spelling of 20893738 in words is "twenty million, eight hundred ninety-three thousand, seven hundred thirty-eight".