12789490 has 48 divisors (see below), whose sum is σ = 27447552. Its totient is φ = 4275936.

The previous prime is 12789479. The next prime is 12789503. The reversal of 12789490 is 9498721.

12789490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 20767 + ... + 21373.

It is an arithmetic number, because the mean of its divisors is an integer number (571824).

Almost surely, 2^12789490 is an apocalyptic number.

12789490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12789490 is an abundant number, since it is smaller than the sum of its proper divisors (14658062).

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

12789490 is a wasteful number, since it uses less digits than its factorization.

12789490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 12789490 is about 3576.2396452140. The cubic root of 12789490 is about 233.8573777208.

The spelling of 12789490 in words is "twelve million, seven hundred eighty-nine thousand, four hundred ninety".