23821798 has 64 divisors (see below), whose sum is σ = 48932352. Its totient is φ = 8398080.

The previous prime is 23821769. The next prime is 23821799. The reversal of 23821798 is 89712832.

It is a self number, because there is not a number n which added to its sum of digits gives 23821798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23821799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146065 + ... + 146227.

It is an arithmetic number, because the mean of its divisors is an integer number (764568).

Almost surely, 2^23821798 is an apocalyptic number.

23821798 is an abundant number, since it is smaller than the sum of its proper divisors (25110554).

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

23821798 is a wasteful number, since it uses less digits than its factorization.

23821798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 48384, while the sum is 40.

The square root of 23821798 is about 4880.7579329444. The cubic root of 23821798 is about 287.7342182109.

The spelling of 23821798 in words is "twenty-three million, eight hundred twenty-one thousand, seven hundred ninety-eight".