20374224 has 80 divisors (see below), whose sum is σ = 57412992. Its totient is φ = 6188544.

The previous prime is 20374201. The next prime is 20374241. The reversal of 20374224 is 42247302.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20374194 and 20374203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64114 + ... + 64430.

Almost surely, 2^20374224 is an apocalyptic number.

20374224 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 20374224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28706496).

20374224 is an abundant number, since it is smaller than the sum of its proper divisors (37038768).

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

20374224 is a wasteful number, since it uses less digits than its factorization.

20374224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20374224 is about 4513.7815631685. The cubic root of 20374224 is about 273.1243110819.

The spelling of 20374224 in words is "twenty million, three hundred seventy-four thousand, two hundred twenty-four".