10402290 has 64 divisors (see below), whose sum is σ = 28252800. Its totient is φ = 2722752.

The previous prime is 10402289. The next prime is 10402303. The reversal of 10402290 is 9220401.

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 31 ways as a sum of consecutive naturals, for example, 15604 + ... + 16256.

It is an arithmetic number, because the mean of its divisors is an integer number (441450).

Almost surely, 2^10402290 is an apocalyptic number.

10402290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10402290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14126400).

10402290 is an abundant number, since it is smaller than the sum of its proper divisors (17850510).

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

10402290 is a wasteful number, since it uses less digits than its factorization.

10402290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 10402290 is about 3225.2581292045. The cubic root of 10402290 is about 218.2945965243.

Adding to 10402290 its reverse (9220401), we get a palindrome (19622691).

The spelling of 10402290 in words is "ten million, four hundred two thousand, two hundred ninety".