13271970 has 16 divisors (see below), whose sum is σ = 31852800. Its totient is φ = 3539184.

The previous prime is 13271969. The next prime is 13271981. The reversal of 13271970 is 7917231.

It is a super-2 number, since 2×13271970² = 352290375361800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 442399 = 13271970 / (1 + 3 + 2 + 7 + 1 + 9 + 7 + 0).

It is a Curzon number.

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, 221170 + ... + 221229.

It is an arithmetic number, because the mean of its divisors is an integer number (1990800).

Almost surely, 2^13271970 is an apocalyptic number.

13271970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13271970 is an abundant number, since it is smaller than the sum of its proper divisors (18580830).

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

13271970 is a wasteful number, since it uses less digits than its factorization.

13271970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442409.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 13271970 is about 3643.0715062979. The cubic root of 13271970 is about 236.7618894300.

It can be divided in two parts, 13271 and 970, that added together give a palindrome (14241).

The spelling of 13271970 in words is "thirteen million, two hundred seventy-one thousand, nine hundred seventy".