20413653 has 8 divisors (see below), whose sum is σ = 29311968. Its totient is φ = 12562224.

The previous prime is 20413633. The next prime is 20413667. The reversal of 20413653 is 35631402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20413653 - 2⁵ = 20413621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413633) 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, 261675 + ... + 261752.

It is an arithmetic number, because the mean of its divisors is an integer number (3663996).

Almost surely, 2^20413653 is an apocalyptic number.

It is an amenable number.

20413653 is a deficient number, since it is larger than the sum of its proper divisors (8898315).

20413653 is a wasteful number, since it uses less digits than its factorization.

20413653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523443.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20413653 is about 4518.1470759593. The cubic root of 20413653 is about 273.3003845207.

The spelling of 20413653 in words is "twenty million, four hundred thirteen thousand, six hundred fifty-three".