20601388 has 6 divisors (see below), whose sum is σ = 36052436. Its totient is φ = 10300692.

The previous prime is 20601367. The next prime is 20601389. The reversal of 20601388 is 88310602.

It is not an unprimeable number, because it can be changed into a prime (20601389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575170 + ... + 2575177.

Almost surely, 2^20601388 is an apocalyptic number.

It is an amenable number.

20601388 is a deficient number, since it is larger than the sum of its proper divisors (15451048).

20601388 is a wasteful number, since it uses less digits than its factorization.

20601388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150351 (or 5150349 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20601388 is about 4538.8751910578. The cubic root of 20601388 is about 274.1356353349.

The spelling of 20601388 in words is "twenty million, six hundred one thousand, three hundred eighty-eight".