20254156 has 24 divisors (see below), whose sum is σ = 38342304. Its totient is φ = 9306240.

The previous prime is 20254153. The next prime is 20254159. The reversal of 20254156 is 65145202.

It is an interprime number because it is at equal distance from previous prime (20254153) and next prime (20254159).

It is a self number, because there is not a number n which added to its sum of digits gives 20254156.

It is not an unprimeable number, because it can be changed into a prime (20254153) 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, 12936 + ... + 14416.

It is an arithmetic number, because the mean of its divisors is an integer number (1597596).

Almost surely, 2^20254156 is an apocalyptic number.

20254156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20254156 is a deficient number, since it is larger than the sum of its proper divisors (18088148).

20254156 is a wasteful number, since it uses less digits than its factorization.

20254156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 20254156 is about 4500.4617540870. The cubic root of 20254156 is about 272.5867344473.

Adding to 20254156 its reverse (65145202), we get a palindrome (85399358).

The spelling of 20254156 in words is "twenty million, two hundred fifty-four thousand, one hundred fifty-six".