20153892 has 24 divisors (see below), whose sum is σ = 51301152. Its totient is φ = 6107200.

The previous prime is 20153879. The next prime is 20153899. The reversal of 20153892 is 29835102.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20153899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76209 + ... + 76472.

It is an arithmetic number, because the mean of its divisors is an integer number (2137548).

Almost surely, 2^20153892 is an apocalyptic number.

20153892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20153892 is an abundant number, since it is smaller than the sum of its proper divisors (31147260).

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

20153892 is a wasteful number, since it uses less digits than its factorization.

20153892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152699 (or 152697 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20153892 is about 4489.3086327407. The cubic root of 20153892 is about 272.1361954896.

Adding to 20153892 its reverse (29835102), we get a palindrome (49988994).

The spelling of 20153892 in words is "twenty million, one hundred fifty-three thousand, eight hundred ninety-two".