4991536 has 40 divisors (see below), whose sum is σ = 10713600. Its totient is φ = 2233920.

The previous prime is 4991507. The next prime is 4991543. The reversal of 4991536 is 6351994.

4991536 = T₇₅ + T₇₆ + ... + T₃₁₁.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4991495 and 4991504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13725 + ... + 14083.

It is an arithmetic number, because the mean of its divisors is an integer number (267840).

Almost surely, 2^4991536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4991536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356800).

4991536 is an abundant number, since it is smaller than the sum of its proper divisors (5722064).

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

4991536 is a wasteful number, since it uses less digits than its factorization.

4991536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 451 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 4991536 is about 2234.1745679333. The cubic root of 4991536 is about 170.9010519286.

The spelling of 4991536 in words is "four million, nine hundred ninety-one thousand, five hundred thirty-six".