20253432 has 32 divisors (see below), whose sum is σ = 52836480. Its totient is φ = 6457440.

The previous prime is 20253419. The next prime is 20253433. The reversal of 20253432 is 23435202.

It is a junction number, because it is equal to n+sod(n) for n = 20253399 and 20253408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253433) 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, 17794 + ... + 18897.

It is an arithmetic number, because the mean of its divisors is an integer number (1651140).

Almost surely, 2^20253432 is an apocalyptic number.

It is an amenable number.

20253432 is an abundant number, since it is smaller than the sum of its proper divisors (32583048).

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

20253432 is a wasteful number, since it uses less digits than its factorization.

20253432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36723 (or 36719 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20253432 is about 4500.3813171775. The cubic root of 20253432 is about 272.5834864695.

Adding to 20253432 its reverse (23435202), we get a palindrome (43688634).

It can be divided in two parts, 202534 and 32, that added together give a triangular number (202566 = T₆₃₆).

The spelling of 20253432 in words is "twenty million, two hundred fifty-three thousand, four hundred thirty-two".