10402040 has 64 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 3694720.

The previous prime is 10402037. The next prime is 10402061. The reversal of 10402040 is 4020401.

It is a Harshad number since it is a multiple of its sum of digits (11).

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, 20429 + ... + 20931.

It is an arithmetic number, because the mean of its divisors is an integer number (408240).

Almost surely, 2^10402040 is an apocalyptic number.

10402040 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 10402040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13063680).

10402040 is an abundant number, since it is smaller than the sum of its proper divisors (15725320).

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

10402040 is a wasteful number, since it uses less digits than its factorization.

10402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 10402040 is about 3225.2193723838. The cubic root of 10402040 is about 218.2928477399.

Adding to 10402040 its reverse (4020401), we get a palindrome (14422441).

The spelling of 10402040 in words is "ten million, four hundred two thousand, forty".