4891240 has 32 divisors (see below), whose sum is σ = 11654280. Its totient is φ = 1841152.

The previous prime is 4891217. The next prime is 4891241. The reversal of 4891240 is 421984.

It can be written as a sum of positive squares in 4 ways, for example, as 3407716 + 1483524 = 1846^2 + 1218^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4891199 and 4891208.

It is not an unprimeable number, because it can be changed into a prime (4891241) 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, 2917 + ... + 4276.

Almost surely, 2^4891240 is an apocalyptic number.

4891240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4891240 is an abundant number, since it is smaller than the sum of its proper divisors (6763040).

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

4891240 is a wasteful number, since it uses less digits than its factorization.

4891240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221 (or 7217 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4891240 is about 2211.6147946693. The cubic root of 4891240 is about 169.7486481572.

The spelling of 4891240 in words is "four million, eight hundred ninety-one thousand, two hundred forty".