1720880253 has 24 divisors (see below), whose sum is σ = 2547999168. Its totient is φ = 1118601792.

The previous prime is 1720880243. The next prime is 1720880257. The reversal of 1720880253 is 3520880271.

It is not a de Polignac number, because 1720880253 - 2⁵ = 1720880221 is a prime.

It is a super-2 number, since 2×1720880253² = 5922857690330688018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720880257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235176 + ... + 242382.

It is an arithmetic number, because the mean of its divisors is an integer number (106166632).

Almost surely, 2^1720880253 is an apocalyptic number.

It is an amenable number.

1720880253 is a deficient number, since it is larger than the sum of its proper divisors (827118915).

1720880253 is a wasteful number, since it uses less digits than its factorization.

1720880253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7873 (or 7870 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1720880253 is about 41483.4937414871. The cubic root of 1720880253 is about 1198.3496417218.

It can be divided in two parts, 17208 and 80253, that added together give a triangular number (97461 = T₄₄₁).

The spelling of 1720880253 in words is "one billion, seven hundred twenty million, eight hundred eighty thousand, two hundred fifty-three".