13421898 has 48 divisors (see below), whose sum is σ = 34145280. Its totient is φ = 3729888.

The previous prime is 13421897. The next prime is 13421917. The reversal of 13421898 is 89812431.

13421898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13421897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3223 + ... + 6101.

It is an arithmetic number, because the mean of its divisors is an integer number (711360).

Almost surely, 2^13421898 is an apocalyptic number.

13421898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13421898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17072640).

13421898 is an abundant number, since it is smaller than the sum of its proper divisors (20723382).

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

13421898 is a wasteful number, since it uses less digits than its factorization.

13421898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931 (or 2928 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13421898 is about 3663.5908614364. The cubic root of 13421898 is about 237.6500872198.

It can be divided in two parts, 1342 and 1898, that added together give a triangular number (3240 = T₈₀).

The spelling of 13421898 in words is "thirteen million, four hundred twenty-one thousand, eight hundred ninety-eight".