20896280 has 32 divisors (see below), whose sum is σ = 48114000. Its totient is φ = 8163456.

The previous prime is 20896277. The next prime is 20896283. The reversal of 20896280 is 8269802.

20896280 = T₃₂₉ + T₃₃₀ + ... + T₅₄₃.

It is an interprime number because it is at equal distance from previous prime (20896277) and next prime (20896283).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20896280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20896283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4355 + ... + 7794.

Almost surely, 2^20896280 is an apocalyptic number.

20896280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20896280 is an abundant number, since it is smaller than the sum of its proper divisors (27217720).

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

20896280 is a wasteful number, since it uses less digits than its factorization.

20896280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12203 (or 12199 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20896280 is about 4571.2449070248. The cubic root of 20896280 is about 275.4374525197.

The spelling of 20896280 in words is "twenty million, eight hundred ninety-six thousand, two hundred eighty".