10997880 has 64 divisors (see below), whose sum is σ = 33899040. Its totient is φ = 2852352.

The previous prime is 10997879. The next prime is 10997911. The reversal of 10997880 is 8879901.

10997880 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3202 + ... + 5678.

Almost surely, 2^10997880 is an apocalyptic number.

10997880 is a gapful number since it is divisible by the number (10) 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 10997880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16949520).

10997880 is an abundant number, since it is smaller than the sum of its proper divisors (22901160).

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

10997880 is a wasteful number, since it uses less digits than its factorization.

10997880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 10997880 is about 3316.3051729297. The cubic root of 10997880 is about 222.3837207517.

The spelling of 10997880 in words is "ten million, nine hundred ninety-seven thousand, eight hundred eighty".