4521870 has 48 divisors (see below), whose sum is σ = 12018240. Its totient is φ = 1179072.

The previous prime is 4521863. The next prime is 4521889. The reversal of 4521870 is 781254.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3696 + ... + 4764.

It is an arithmetic number, because the mean of its divisors is an integer number (250380).

Almost surely, 2^4521870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4521870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6009120).

4521870 is an abundant number, since it is smaller than the sum of its proper divisors (7496370).

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

4521870 is a wasteful number, since it uses less digits than its factorization.

4521870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 4521870 is about 2126.4689040755. The cubic root of 4521870 is about 165.3633864391.

The spelling of 4521870 in words is "four million, five hundred twenty-one thousand, eight hundred seventy".