20432613 has 16 divisors (see below), whose sum is σ = 28040256. Its totient is φ = 13228800.

The previous prime is 20432609. The next prime is 20432663. The reversal of 20432613 is 31623402.

It is a happy number.

It is not a de Polignac number, because 20432613 - 2² = 20432609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20432613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16413 + ... + 17613.

It is an arithmetic number, because the mean of its divisors is an integer number (1752516).

Almost surely, 2^20432613 is an apocalyptic number.

It is an amenable number.

20432613 is a deficient number, since it is larger than the sum of its proper divisors (7607643).

20432613 is a wasteful number, since it uses less digits than its factorization.

20432613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20432613 is about 4520.2447942562. The cubic root of 20432613 is about 273.3849712408.

It can be divided in two parts, 2043 and 2613, that added together give a triangular number (4656 = T₉₆).

The spelling of 20432613 in words is "twenty million, four hundred thirty-two thousand, six hundred thirteen".