10291816 has 16 divisors (see below), whose sum is σ = 19354500. Its totient is φ = 5130624.

The previous prime is 10291811. The next prime is 10291823. The reversal of 10291816 is 61819201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9180900 + 1110916 = 3030^2 + 1054^2 .

It is not an unprimeable number, because it can be changed into a prime (10291811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260 + ... + 4708.

Almost surely, 2^10291816 is an apocalyptic number.

It is an amenable number.

10291816 is a deficient number, since it is larger than the sum of its proper divisors (9062684).

10291816 is a wasteful number, since it uses less digits than its factorization.

10291816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3824 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 10291816 is about 3208.0860337591. The cubic root of 10291816 is about 217.5190699798.

The spelling of 10291816 in words is "ten million, two hundred ninety-one thousand, eight hundred sixteen".