13875378 has 16 divisors (see below), whose sum is σ = 30273696. Its totient is φ = 4204640.

The previous prime is 13875361. The next prime is 13875391. The reversal of 13875378 is 87357831.

It is a super-2 number, since 2×13875378² = 385052229285768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105051 + ... + 105182.

It is an arithmetic number, because the mean of its divisors is an integer number (1892106).

Almost surely, 2^13875378 is an apocalyptic number.

13875378 is an abundant number, since it is smaller than the sum of its proper divisors (16398318).

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

13875378 is a wasteful number, since it uses less digits than its factorization.

13875378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210249.

The product of its digits is 141120, while the sum is 42.

The square root of 13875378 is about 3724.9668454900. The cubic root of 13875378 is about 240.2969588018.

It can be divided in two parts, 138753 and 78, that added together give a palindrome (138831).

The spelling of 13875378 in words is "thirteen million, eight hundred seventy-five thousand, three hundred seventy-eight".