4891720 has 32 divisors (see below), whose sum is σ = 11388600. Its totient is φ = 1888768.

The previous prime is 4891717. The next prime is 4891727. The reversal of 4891720 is 271984.

It can be written as a sum of positive squares in 4 ways, for example, as 4639716 + 252004 = 2154^2 + 502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891727) 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, 949 + ... + 3268.

Almost surely, 2^4891720 is an apocalyptic number.

4891720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4891720 is an abundant number, since it is smaller than the sum of its proper divisors (6496880).

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

4891720 is a wasteful number, since it uses less digits than its factorization.

4891720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257 (or 4253 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 4891720 is about 2211.7233100006. The cubic root of 4891720 is about 169.7542007155.

It can be divided in two parts, 489 and 1720, that added together give a square (2209 = 47²).

The spelling of 4891720 in words is "four million, eight hundred ninety-one thousand, seven hundred twenty".