20379472 has 40 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 9609600.

The previous prime is 20379467. The next prime is 20379479. The reversal of 20379472 is 27497302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379479) 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, 28722 + ... + 29422.

It is an arithmetic number, because the mean of its divisors is an integer number (1044576).

Almost surely, 2^20379472 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 20379472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20891520).

20379472 is an abundant number, since it is smaller than the sum of its proper divisors (21403568).

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

20379472 is a wasteful number, since it uses less digits than its factorization.

20379472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 20379472 is about 4514.3628564837. The cubic root of 20379472 is about 273.1477595551.

The spelling of 20379472 in words is "twenty million, three hundred seventy-nine thousand, four hundred seventy-two".