12878290 has 8 divisors (see below), whose sum is σ = 23180940. Its totient is φ = 5151312.

The previous prime is 12878287. The next prime is 12878297. The reversal of 12878290 is 9287821.

It can be written as a sum of positive squares in 2 ways, for example, as 12837889 + 40401 = 3583^2 + 201^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12878297) 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, 643905 + ... + 643924.

Almost surely, 2^12878290 is an apocalyptic number.

12878290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12878290 is a deficient number, since it is larger than the sum of its proper divisors (10302650).

12878290 is a wasteful number, since it uses less digits than its factorization.

12878290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287836.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 12878290 is about 3588.6334446416. The cubic root of 12878290 is about 234.3973694797.

The spelling of 12878290 in words is "twelve million, eight hundred seventy-eight thousand, two hundred ninety".