20269080 has 192 divisors, whose sum is σ = 73120320. Its totient is φ = 4838400.

The previous prime is 20269063. The next prime is 20269087. The reversal of 20269080 is 8096202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20269087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285445 + ... + 285515.

It is an arithmetic number, because the mean of its divisors is an integer number (380835).

Almost surely, 2^20269080 is an apocalyptic number.

20269080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20269080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

20269080 is an abundant number, since it is smaller than the sum of its proper divisors (52851240).

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

20269080 is a wasteful number, since it uses less digits than its factorization.

20269080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20269080 is about 4502.1195008573. The cubic root of 20269080 is about 272.6536686222.

The spelling of 20269080 in words is "twenty million, two hundred sixty-nine thousand, eighty".