10309090 has 16 divisors (see below), whose sum is σ = 20243520. Its totient is φ = 3748720.

The previous prime is 10309073. The next prime is 10309097. The reversal of 10309090 is 9090301.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an alternating number because its digits alternate between odd and even.

10309090 is a modest number, since divided by 9090 gives 1030 as remainder.

It is not an unprimeable number, because it can be changed into a prime (10309097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46750 + ... + 46969.

It is an arithmetic number, because the mean of its divisors is an integer number (1265220).

Almost surely, 2^10309090 is an apocalyptic number.

10309090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10309090 is a deficient number, since it is larger than the sum of its proper divisors (9934430).

10309090 is a wasteful number, since it uses less digits than its factorization.

10309090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93737.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 10309090 is about 3210.7771644884. Note that the first 3 decimals coincide. The cubic root of 10309090 is about 217.6406981484.

Adding to 10309090 its reverse (9090301), we get a palindrome (19399391).

The spelling of 10309090 in words is "ten million, three hundred nine thousand, ninety".