10631440 has 20 divisors (see below), whose sum is σ = 24718284. Its totient is φ = 4252544.

The previous prime is 10631377. The next prime is 10631471. The reversal of 10631440 is 4413601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 3211264 = 2724^2 + 1792^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×10631440² = 226055032947200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66367 + ... + 66526.

Almost surely, 2^10631440 is an apocalyptic number.

10631440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10631440 is an abundant number, since it is smaller than the sum of its proper divisors (14086844).

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

10631440 is a wasteful number, since it uses less digits than its factorization.

10631440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132906 (or 132900 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 10631440 is about 3260.5889038638. The cubic root of 10631440 is about 219.8858912380.

The spelling of 10631440 in words is "ten million, six hundred thirty-one thousand, four hundred forty".