20377044 has 72 divisors (see below), whose sum is σ = 56026880. Its totient is φ = 6227280.

The previous prime is 20377043. The next prime is 20377087. The reversal of 20377044 is 44077302.

It is a junction number, because it is equal to n+sod(n) for n = 20376999 and 20377017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657309 + ... + 657339.

Almost surely, 2^20377044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20377044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28013440).

20377044 is an abundant number, since it is smaller than the sum of its proper divisors (35649836).

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

20377044 is a wasteful number, since it uses less digits than its factorization.

20377044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20377044 is about 4514.0939290183. The cubic root of 20377044 is about 273.1369115622.

The spelling of 20377044 in words is "twenty million, three hundred seventy-seven thousand, forty-four".