20273136 has 80 divisors (see below), whose sum is σ = 57558816. Its totient is φ = 6110208.

The previous prime is 20273131. The next prime is 20273159. The reversal of 20273136 is 63137202.

It is a super-2 number, since 2×20273136² = 822000086548992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20273131) 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, 32766 + ... + 33378.

Almost surely, 2^20273136 is an apocalyptic number.

20273136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20273136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28779408).

20273136 is an abundant number, since it is smaller than the sum of its proper divisors (37285680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20273136 is a wasteful number, since it uses less digits than its factorization.

20273136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 20273136 is about 4502.5699328273. The cubic root of 20273136 is about 272.6718541133.

The spelling of 20273136 in words is "twenty million, two hundred seventy-three thousand, one hundred thirty-six".