373821520 has 20 divisors (see below), whose sum is σ = 869135220. Its totient is φ = 149528576.

The previous prime is 373821493. The next prime is 373821521. The reversal of 373821520 is 25128373.

373821520 is digitally balanced in base 3, 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 38638656 + 335182864 = 6216^2 + 18308^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×373821520² = 279485057630220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373821521) 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, 2336305 + ... + 2336464.

It is an arithmetic number, because the mean of its divisors is an integer number (43456761).

Almost surely, 2^373821520 is an apocalyptic number.

It is an amenable number.

373821520 is an abundant number, since it is smaller than the sum of its proper divisors (495313700).

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

373821520 is a wasteful number, since it uses less digits than its factorization.

373821520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672782 (or 4672776 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 373821520 is about 19334.4645646059. The cubic root of 373821520 is about 720.3685869986.

Adding to 373821520 its reverse (25128373), we get a palindrome (398949893).

The spelling of 373821520 in words is "three hundred seventy-three million, eight hundred twenty-one thousand, five hundred twenty".