20253464 has 96 divisors (see below), whose sum is σ = 49476000. Its totient is φ = 7761600.

The previous prime is 20253451. The next prime is 20253469. The reversal of 20253464 is 46435202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331994 + ... + 332054.

It is an arithmetic number, because the mean of its divisors is an integer number (515375).

Almost surely, 2^20253464 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 20253464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24738000).

20253464 is an abundant number, since it is smaller than the sum of its proper divisors (29222536).

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

20253464 is a wasteful number, since it uses less digits than its factorization.

20253464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 20253464 is about 4500.3848724304. The cubic root of 20253464 is about 272.5836300282.

Adding to 20253464 its reverse (46435202), we get a palindrome (66688666).

The spelling of 20253464 in words is "twenty million, two hundred fifty-three thousand, four hundred sixty-four".