20797260 has 48 divisors (see below), whose sum is σ = 63528192. Its totient is φ = 5041600.

The previous prime is 20797247. The next prime is 20797261. The reversal of 20797260 is 6279702.

20797260 = T₆₀ + T₆₁ + ... + T₄₉₉.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20797261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15096 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (1323504).

Almost surely, 2^20797260 is an apocalyptic number.

20797260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20797260 is an abundant number, since it is smaller than the sum of its proper divisors (42730932).

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

20797260 is a wasteful number, since it uses less digits than its factorization.

20797260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31534 (or 31532 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 20797260 is about 4560.4012981316. The cubic root of 20797260 is about 275.0016969592.

It can be divided in two parts, 2079 and 7260, that added together give a palindrome (9339).

The spelling of 20797260 in words is "twenty million, seven hundred ninety-seven thousand, two hundred sixty".