4721970 has 64 divisors (see below), whose sum is σ = 12700800. Its totient is φ = 1113600.

The previous prime is 4721963. The next prime is 4721999. The reversal of 4721970 is 791274.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13356 + ... + 13704.

It is an arithmetic number, because the mean of its divisors is an integer number (198450).

Almost surely, 2^4721970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4721970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6350400).

4721970 is an abundant number, since it is smaller than the sum of its proper divisors (7978830).

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

4721970 is a wasteful number, since it uses less digits than its factorization.

4721970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 4721970 is about 2173.0094339418. The cubic root of 4721970 is about 167.7674645682.

It can be divided in two parts, 472 and 1970, that added together give a palindrome (2442).

The spelling of 4721970 in words is "four million, seven hundred twenty-one thousand, nine hundred seventy".