20889377 has 8 divisors (see below), whose sum is σ = 21464352. Its totient is φ = 20317600.

The previous prime is 20889373. The next prime is 20889397. The reversal of 20889377 is 77398802.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20889377 - 2² = 20889373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20889373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18602 + ... + 19692.

It is an arithmetic number, because the mean of its divisors is an integer number (2683044).

Almost surely, 2^20889377 is an apocalyptic number.

It is an amenable number.

20889377 is a deficient number, since it is larger than the sum of its proper divisors (574975).

20889377 is a wasteful number, since it uses less digits than its factorization.

20889377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 20889377 is about 4570.4897986977. The cubic root of 20889377 is about 275.4071193034.

The spelling of 20889377 in words is "twenty million, eight hundred eighty-nine thousand, three hundred seventy-seven".