10269640 has 32 divisors (see below), whose sum is σ = 23429880. Its totient is φ = 4050432.

The previous prime is 10269631. The next prime is 10269667. The reversal of 10269640 is 4696201.

10269640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10074276 + 195364 = 3174^2 + 442^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10269599 and 10269608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162 + ... + 4678.

Almost surely, 2^10269640 is an apocalyptic number.

10269640 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 10269640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11714940).

10269640 is an abundant number, since it is smaller than the sum of its proper divisors (13160240).

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

10269640 is a wasteful number, since it uses less digits than its factorization.

10269640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 10269640 is about 3204.6279035170. The cubic root of 10269640 is about 217.3627266086.

The spelling of 10269640 in words is "ten million, two hundred sixty-nine thousand, six hundred forty".