13826890 has 32 divisors (see below), whose sum is σ = 31031424. Its totient is φ = 4309440.

The previous prime is 13826849. The next prime is 13826921. The reversal of 13826890 is 9862831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8209 + ... + 9748.

It is an arithmetic number, because the mean of its divisors is an integer number (969732).

Almost surely, 2^13826890 is an apocalyptic number.

13826890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13826890 is an abundant number, since it is smaller than the sum of its proper divisors (17204534).

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

13826890 is a wasteful number, since it uses less digits than its factorization.

13826890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17982.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 13826890 is about 3718.4526351696. The cubic root of 13826890 is about 240.0167233717.

It can be divided in two parts, 138 and 26890, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 13826890 in words is "thirteen million, eight hundred twenty-six thousand, eight hundred ninety".