20674944 has 96 divisors (see below), whose sum is σ = 60386040. Its totient is φ = 6789120.

The previous prime is 20674943. The next prime is 20674949. The reversal of 20674944 is 44947602.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20674899 and 20674908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20674943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150844 + ... + 150980.

Almost surely, 2^20674944 is an apocalyptic number.

20674944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20674944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30193020).

20674944 is an abundant number, since it is smaller than the sum of its proper divisors (39711096).

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

20674944 is a wasteful number, since it uses less digits than its factorization.

20674944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 20674944 is about 4546.9708598143. The cubic root of 20674944 is about 274.4615093293.

The spelling of 20674944 in words is "twenty million, six hundred seventy-four thousand, nine hundred forty-four".