4721490 has 96 divisors (see below), whose sum is σ = 13366080. Its totient is φ = 1197504.

The previous prime is 4721477. The next prime is 4721491. The reversal of 4721490 is 941274.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70437 + ... + 70503.

It is an arithmetic number, because the mean of its divisors is an integer number (139230).

Almost surely, 2^4721490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4721490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6683040).

4721490 is an abundant number, since it is smaller than the sum of its proper divisors (8644590).

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

4721490 is a wasteful number, since it uses less digits than its factorization.

4721490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 4721490 is about 2172.8989852269. The cubic root of 4721490 is about 167.7617797155.

The spelling of 4721490 in words is "four million, seven hundred twenty-one thousand, four hundred ninety".