20162493 has 64 divisors (see below), whose sum is σ = 35481600. Its totient is φ = 11197440.

The previous prime is 20162489. The next prime is 20162501. The reversal of 20162493 is 39426102.

It is not a de Polignac number, because 20162493 - 2² = 20162489 is a prime.

It is a super-2 number, since 2×20162493² = 813052247950098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20162413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184923 + ... + 185031.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^20162493 is an apocalyptic number.

It is an amenable number.

20162493 is a deficient number, since it is larger than the sum of its proper divisors (15319107).

20162493 is a wasteful number, since it uses less digits than its factorization.

20162493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20162493 is about 4490.2664731617. The cubic root of 20162493 is about 272.1749028276.

Adding to 20162493 its reverse (39426102), we get a palindrome (59588595).

The spelling of 20162493 in words is "twenty million, one hundred sixty-two thousand, four hundred ninety-three".