3872830 has 32 divisors (see below), whose sum is σ = 7757568. Its totient is φ = 1383840.

The previous prime is 3872807. The next prime is 3872833. The reversal of 3872830 is 382783.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 3872792 and 3872801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124915 + ... + 124945.

It is an arithmetic number, because the mean of its divisors is an integer number (242424).

Almost surely, 2^3872830 is an apocalyptic number.

3872830 is an abundant number, since it is smaller than the sum of its proper divisors (3884738).

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

3872830 is an equidigital number, since it uses as much as digits as its factorization.

3872830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 3872830 is about 1967.9507107649. The cubic root of 3872830 is about 157.0397075921.

The spelling of 3872830 in words is "three million, eight hundred seventy-two thousand, eight hundred thirty".