12723890 has 16 divisors (see below), whose sum is σ = 22972032. Its totient is φ = 5074224.

The previous prime is 12723889. The next prime is 12723917. The reversal of 12723890 is 9832721.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1937 + ... + 5403.

It is an arithmetic number, because the mean of its divisors is an integer number (1435752).

Almost surely, 2^12723890 is an apocalyptic number.

12723890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12723890 is a deficient number, since it is larger than the sum of its proper divisors (10248142).

12723890 is a wasteful number, since it uses less digits than its factorization.

12723890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12723890 is about 3567.0562092572. The cubic root of 12723890 is about 233.4568574986.

The spelling of 12723890 in words is "twelve million, seven hundred twenty-three thousand, eight hundred ninety".