373821 has 12 divisors (see below), whose sum is σ = 580032. Its totient is φ = 213528.

The previous prime is 373783. The next prime is 373823. The reversal of 373821 is 128373.

It is not a de Polignac number, because 373821 - 2⁶ = 373757 is a prime.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 373791 and 373800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373823) 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 11 ways as a sum of consecutive naturals, for example, 1125 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (48336).

2³⁷³⁸²¹ is an apocalyptic number.

It is an amenable number.

373821 is a deficient number, since it is larger than the sum of its proper divisors (206211).

373821 is a wasteful number, since it uses less digits than its factorization.

373821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560 (or 2553 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 373821 is about 611.4090283926. The cubic root of 373821 is about 72.0368252978.

The spelling of 373821 in words is "three hundred seventy-three thousand, eight hundred twenty-one".