13421770 has 8 divisors (see below), whose sum is σ = 24159204. Its totient is φ = 5368704.

The previous prime is 13421767. The next prime is 13421783. The reversal of 13421770 is 7712431.

It is a happy number.

13421770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13388281 + 33489 = 3659^2 + 183^2 .

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

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671079 + ... + 671098.

Almost surely, 2^13421770 is an apocalyptic number.

13421770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13421770 is a deficient number, since it is larger than the sum of its proper divisors (10737434).

13421770 is a wasteful number, since it uses less digits than its factorization.

13421770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342184.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 13421770 is about 3663.5733921951. The cubic root of 13421770 is about 237.6493317551.

It can be divided in two parts, 134 and 21770, that added together give a square (21904 = 148²).

The spelling of 13421770 in words is "thirteen million, four hundred twenty-one thousand, seven hundred seventy".