4628721 has 8 divisors (see below), whose sum is σ = 6181920. Its totient is φ = 3080672.

The previous prime is 4628699. The next prime is 4628731. The reversal of 4628721 is 1278264.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4628721 - 2⁹ = 4628209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4628731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (772740).

Almost surely, 2^4628721 is an apocalyptic number.

It is an amenable number.

4628721 is a deficient number, since it is larger than the sum of its proper divisors (1553199).

4628721 is a wasteful number, since it uses less digits than its factorization.

4628721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575.

The product of its digits is 5376, while the sum is 30.

The square root of 4628721 is about 2151.4462577531. The cubic root of 4628721 is about 166.6557623977.

The spelling of 4628721 in words is "four million, six hundred twenty-eight thousand, seven hundred twenty-one".