20254534 has 8 divisors (see below), whose sum is σ = 30402720. Its totient is φ = 10120296.

The previous prime is 20254519. The next prime is 20254537. The reversal of 20254534 is 43545202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20254534² = 820492295114312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20254499 and 20254508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672 + ... + 6580.

It is an arithmetic number, because the mean of its divisors is an integer number (3800340).

Almost surely, 2^20254534 is an apocalyptic number.

20254534 is a deficient number, since it is larger than the sum of its proper divisors (10148186).

20254534 is a wasteful number, since it uses less digits than its factorization.

20254534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 20254534 is about 4500.5037495818. The cubic root of 20254534 is about 272.5884301840.

Adding to 20254534 its reverse (43545202), we get a palindrome (63799736).

The spelling of 20254534 in words is "twenty million, two hundred fifty-four thousand, five hundred thirty-four".