20152454 has 16 divisors (see below), whose sum is σ = 34617888. Its totient is φ = 8619072.

The previous prime is 20152441. The next prime is 20152459. The reversal of 20152454 is 45425102.

It is a happy number.

It is a super-2 number, since 2×20152454² = 812242804444232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152459) 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, 7472 + ... + 9804.

It is an arithmetic number, because the mean of its divisors is an integer number (2163618).

Almost surely, 2^20152454 is an apocalyptic number.

20152454 is a deficient number, since it is larger than the sum of its proper divisors (14465434).

20152454 is a wasteful number, since it uses less digits than its factorization.

20152454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 20152454 is about 4489.1484715924. The cubic root of 20152454 is about 272.1297229407.

Adding to 20152454 its reverse (45425102), we get a palindrome (65577556).

The spelling of 20152454 in words is "twenty million, one hundred fifty-two thousand, four hundred fifty-four".