20493153 has 48 divisors (see below), whose sum is σ = 33196800. Its totient is φ = 12130560.

The previous prime is 20493131. The next prime is 20493197. The reversal of 20493153 is 35139402.

20493153 is a `hidden beast` number, since 20 + 493 + 153 = 666.

It is not a de Polignac number, because 20493153 - 2¹⁷ = 20362081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20493113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 259368 + ... + 259446.

It is an arithmetic number, because the mean of its divisors is an integer number (691600).

Almost surely, 2^20493153 is an apocalyptic number.

It is an amenable number.

20493153 is a deficient number, since it is larger than the sum of its proper divisors (12703647).

20493153 is a wasteful number, since it uses less digits than its factorization.

20493153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20493153 is about 4526.9363812627. The cubic root of 20493153 is about 273.6547100631.

The spelling of 20493153 in words is "twenty million, four hundred ninety-three thousand, one hundred fifty-three".