10221790 has 8 divisors (see below), whose sum is σ = 18399240. Its totient is φ = 4088712.

The previous prime is 10221781. The next prime is 10221793. The reversal of 10221790 is 9712201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221793) 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, 511080 + ... + 511099.

It is an arithmetic number, because the mean of its divisors is an integer number (2299905).

Almost surely, 2^10221790 is an apocalyptic number.

10221790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10221790 is a deficient number, since it is larger than the sum of its proper divisors (8177450).

10221790 is a wasteful number, since it uses less digits than its factorization.

10221790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022186.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 10221790 is about 3197.1534214047. The cubic root of 10221790 is about 217.0246101758.

Adding to 10221790 its reverse (9712201), we get a palindrome (19933991).

It can be divided in two parts, 10221 and 790, that added together give a palindrome (11011).

The spelling of 10221790 in words is "ten million, two hundred twenty-one thousand, seven hundred ninety".