13478890 has 16 divisors (see below), whose sum is σ = 24313608. Its totient is φ = 5380096.

The previous prime is 13478887. The next prime is 13478903. The reversal of 13478890 is 9887431.

It can be written as a sum of positive squares in 4 ways, for example, as 13039321 + 439569 = 3611^2 + 663^2 .

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, 4794 + ... + 7066.

Almost surely, 2^13478890 is an apocalyptic number.

13478890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13478890 is a deficient number, since it is larger than the sum of its proper divisors (10834718).

13478890 is a wasteful number, since it uses less digits than its factorization.

13478890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 13478890 is about 3671.3607831429. The cubic root of 13478890 is about 237.9859818027.

The spelling of 13478890 in words is "thirteen million, four hundred seventy-eight thousand, eight hundred ninety".