13751890 has 8 divisors (see below), whose sum is σ = 24753420. Its totient is φ = 5500752.

The previous prime is 13751869. The next prime is 13751891. The reversal of 13751890 is 9815731.

It is a happy number.

13751890 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 + 363609 = 3659^2 + 603^2 .

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

It is a super-2 number, since 2×13751890² = 378228957144200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13751891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687585 + ... + 687604.

Almost surely, 2^13751890 is an apocalyptic number.

13751890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13751890 is a deficient number, since it is larger than the sum of its proper divisors (11001530).

13751890 is a wasteful number, since it uses less digits than its factorization.

13751890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375196.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 13751890 is about 3708.3540823390. The cubic root of 13751890 is about 239.5819690576.

It can be divided in two parts, 13751 and 890, that added together give a palindrome (14641).

The spelling of 13751890 in words is "thirteen million, seven hundred fifty-one thousand, eight hundred ninety".