10144781 has 4 divisors (see below), whose sum is σ = 10472064. Its totient is φ = 9817500.

The previous prime is 10144769. The next prime is 10144789. The reversal of 10144781 is 18744101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18744101 = 113 ⋅165877.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10144781 is a prime.

It is a super-2 number, since 2×10144781² = 205833163075922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10144781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10144789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163595 + ... + 163656.

It is an arithmetic number, because the mean of its divisors is an integer number (2618016).

Almost surely, 2^10144781 is an apocalyptic number.

It is an amenable number.

10144781 is a deficient number, since it is larger than the sum of its proper divisors (327283).

10144781 is an equidigital number, since it uses as much as digits as its factorization.

10144781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327282.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 10144781 is about 3185.0872829485. The cubic root of 10144781 is about 216.4782285336.

Adding to 10144781 its reverse (18744101), we get a palindrome (28888882).

The spelling of 10144781 in words is "ten million, one hundred forty-four thousand, seven hundred eighty-one".