20273513 has 16 divisors (see below), whose sum is σ = 23150400. Its totient is φ = 17599680.

The previous prime is 20273501. The next prime is 20273527. The reversal of 20273513 is 31537202.

It is a cyclic number.

It is not a de Polignac number, because 20273513 - 2⁸ = 20273257 is a prime.

It is a super-2 number, since 2×20273513² = 822030658722338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20273543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51923 + ... + 52311.

It is an arithmetic number, because the mean of its divisors is an integer number (1446900).

Almost surely, 2^20273513 is an apocalyptic number.

It is an amenable number.

20273513 is a deficient number, since it is larger than the sum of its proper divisors (2876887).

20273513 is a wasteful number, since it uses less digits than its factorization.

20273513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20273513 is about 4502.6117976126. The cubic root of 20273513 is about 272.6735443082.

The spelling of 20273513 in words is "twenty million, two hundred seventy-three thousand, five hundred thirteen".