10531880 has 32 divisors (see below), whose sum is σ = 23806440. Its totient is φ = 4193280.

The previous prime is 10531877. The next prime is 10531883. The reversal of 10531880 is 8813501.

It is an interprime number because it is at equal distance from previous prime (10531877) and next prime (10531883).

It can be written as a sum of positive squares in 4 ways, for example, as 6666724 + 3865156 = 2582^2 + 1966^2 .

It is a super-2 number, since 2×10531880² = 221840992668800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10531883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10772 + ... + 11708.

Almost surely, 2^10531880 is an apocalyptic number.

10531880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10531880 is the 1874-th octagonal number.

It is an amenable number.

10531880 is an abundant number, since it is smaller than the sum of its proper divisors (13274560).

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

10531880 is a wasteful number, since it uses less digits than its factorization.

10531880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 10531880 is about 3245.2858117583. The cubic root of 10531880 is about 219.1973506526.

It can be divided in two parts, 10531 and 880, that added together give a palindrome (11411).

The spelling of 10531880 in words is "ten million, five hundred thirty-one thousand, eight hundred eighty".