824040381 has 8 divisors (see below), whose sum is σ = 1099465344. Its totient is φ = 548987840.

The previous prime is 824040367. The next prime is 824040391. The reversal of 824040381 is 183040428.

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

It is a cyclic number.

It is not a de Polignac number, because 824040381 - 2¹⁰ = 824039357 is a prime.

It is a super-2 number, since 2×824040381² = 1358085099037250322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (824040311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87900 + ... + 96821.

It is an arithmetic number, because the mean of its divisors is an integer number (137433168).

Almost surely, 2^824040381 is an apocalyptic number.

It is an amenable number.

824040381 is a deficient number, since it is larger than the sum of its proper divisors (275424963).

824040381 is a wasteful number, since it uses less digits than its factorization.

824040381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186211.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 824040381 is about 28706.1035495938. The cubic root of 824040381 is about 937.5249438341.

The spelling of 824040381 in words is "eight hundred twenty-four million, forty thousand, three hundred eighty-one".