10403640 has 240 divisors, whose sum is σ = 39857400. Its totient is φ = 2426112.

The previous prime is 10403639. The next prime is 10403669. The reversal of 10403640 is 4630401.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 547551 + ... + 547569.

Almost surely, 2^10403640 is an apocalyptic number.

10403640 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 10403640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19928700).

10403640 is an abundant number, since it is smaller than the sum of its proper divisors (29453760).

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

10403640 is a wasteful number, since it uses less digits than its factorization.

10403640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 10403640 is about 3225.4674079891. The cubic root of 10403640 is about 218.3040394757.

The spelling of 10403640 in words is "ten million, four hundred three thousand, six hundred forty".