20229376 has 36 divisors (see below), whose sum is σ = 42515200. Its totient is φ = 9580032.

The previous prime is 20229367. The next prime is 20229379. The reversal of 20229376 is 67392202.

It is a super-4 number, since 4×20229376⁴ (a number of 30 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20229379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2785 + ... + 6943.

Almost surely, 2^20229376 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 20229376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21257600).

20229376 is an abundant number, since it is smaller than the sum of its proper divisors (22285824).

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

20229376 is an equidigital number, since it uses as much as digits as its factorization.

20229376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20229376 is about 4497.7078606775. The cubic root of 20229376 is about 272.4755234307.

The spelling of 20229376 in words is "twenty million, two hundred twenty-nine thousand, three hundred seventy-six".