10721826 has 24 divisors (see below), whose sum is σ = 23413104. Its totient is φ = 3545880.

The previous prime is 10721819. The next prime is 10721827. The reversal of 10721826 is 62812701.

It is a super-2 number, since 2×10721826² = 229915105548552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10721826.

It is not an unprimeable number, because it can be changed into a prime (10721827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85 + ... + 4631.

It is an arithmetic number, because the mean of its divisors is an integer number (975546).

Almost surely, 2^10721826 is an apocalyptic number.

10721826 is an abundant number, since it is smaller than the sum of its proper divisors (12691278).

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

10721826 is a wasteful number, since it uses less digits than its factorization.

10721826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686 (or 4683 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 10721826 is about 3274.4199486321. The cubic root of 10721826 is about 220.5072729642.

The spelling of 10721826 in words is "ten million, seven hundred twenty-one thousand, eight hundred twenty-six".