20746253 has 16 divisors (see below), whose sum is σ = 24178176. Its totient is φ = 17611440.

The previous prime is 20746249. The next prime is 20746277. The reversal of 20746253 is 35264702.

It is not a de Polignac number, because 20746253 - 2² = 20746249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746213) 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, 9926 + ... + 11832.

It is an arithmetic number, because the mean of its divisors is an integer number (1511136).

Almost surely, 2^20746253 is an apocalyptic number.

20746253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20746253 is a deficient number, since it is larger than the sum of its proper divisors (3431923).

20746253 is a wasteful number, since it uses less digits than its factorization.

20746253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20746253 is about 4554.8054843209. The cubic root of 20746253 is about 274.7766914429.

The spelling of 20746253 in words is "twenty million, seven hundred forty-six thousand, two hundred fifty-three".