20136453 has 16 divisors (see below), whose sum is σ = 28396032. Its totient is φ = 12672000.

The previous prime is 20136443. The next prime is 20136463. The reversal of 20136453 is 35463102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20136443) and next prime (20136463).

It is not a de Polignac number, because 20136453 - 2⁵ = 20136421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136433) 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, 1173 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (1774752).

Almost surely, 2^20136453 is an apocalyptic number.

It is an amenable number.

20136453 is a deficient number, since it is larger than the sum of its proper divisors (8259579).

20136453 is a wasteful number, since it uses less digits than its factorization.

20136453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356.

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

The square root of 20136453 is about 4487.3659311449. The cubic root of 20136453 is about 272.0576804217.

Adding to 20136453 its reverse (35463102), we get a palindrome (55599555).

The spelling of 20136453 in words is "twenty million, one hundred thirty-six thousand, four hundred fifty-three".