13869570 has 128 divisors (see below), whose sum is σ = 40497408. Its totient is φ = 2995200.

The previous prime is 13869553. The next prime is 13869571. The reversal of 13869570 is 7596831.

It is a super-3 number, since 3×13869570³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (13869571) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 227340 + ... + 227400.

It is an arithmetic number, because the mean of its divisors is an integer number (316386).

Almost surely, 2^13869570 is an apocalyptic number.

13869570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13869570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20248704).

13869570 is an abundant number, since it is smaller than the sum of its proper divisors (26627838).

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

13869570 is a wasteful number, since it uses less digits than its factorization.

13869570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 13869570 is about 3724.1871596363. The cubic root of 13869570 is about 240.2634260333.

The spelling of 13869570 in words is "thirteen million, eight hundred sixty-nine thousand, five hundred seventy".