13421380 has 48 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 4475520.

The previous prime is 13421363. The next prime is 13421393. The reversal of 13421380 is 8312431.

13421380 = 172² + 173² + ... + 356².

It is a super-2 number, since 2×13421380² = 360266882208800, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3885 + ... + 6475.

It is an arithmetic number, because the mean of its divisors is an integer number (689472).

Almost surely, 2^13421380 is an apocalyptic number.

13421380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13421380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16547328).

13421380 is an abundant number, since it is smaller than the sum of its proper divisors (19673276).

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

13421380 is a wasteful number, since it uses less digits than its factorization.

13421380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13421380 is about 3663.5201650871. The cubic root of 13421380 is about 237.6470299192.

The spelling of 13421380 in words is "thirteen million, four hundred twenty-one thousand, three hundred eighty".