3920730 has 48 divisors (see below), whose sum is σ = 10360224. Its totient is φ = 941760.

The previous prime is 3920729. The next prime is 3920737. The reversal of 3920730 is 370293.

It is a self number, because there is not a number n which added to its sum of digits gives 3920730.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35916 + ... + 36024.

It is an arithmetic number, because the mean of its divisors is an integer number (215838).

Almost surely, 2^3920730 is an apocalyptic number.

3920730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3920730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5180112).

3920730 is an abundant number, since it is smaller than the sum of its proper divisors (6439494).

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

3920730 is a wasteful number, since it uses less digits than its factorization.

3920730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 3920730 is about 1980.0833315798. The cubic root of 3920730 is about 157.6844902850.

The spelling of 3920730 in words is "three million, nine hundred twenty thousand, seven hundred thirty".