20432153 has 16 divisors (see below), whose sum is σ = 24312960. Its totient is φ = 16800000.

The previous prime is 20432149. The next prime is 20432161. The reversal of 20432153 is 35123402.

20432153 = T₉₇ + T₉₈ + ... + T₄₉₇.

It is a happy number.

It is not a de Polignac number, because 20432153 - 2² = 20432149 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20432123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50753 + ... + 51153.

It is an arithmetic number, because the mean of its divisors is an integer number (1519560).

Almost surely, 2^20432153 is an apocalyptic number.

It is an amenable number.

20432153 is a deficient number, since it is larger than the sum of its proper divisors (3880807).

20432153 is a wasteful number, since it uses less digits than its factorization.

20432153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20432153 is about 4520.1939117697. The cubic root of 20432153 is about 273.3829196508.

Adding to 20432153 its reverse (35123402), we get a palindrome (55555555).

The spelling of 20432153 in words is "twenty million, four hundred thirty-two thousand, one hundred fifty-three".