4528491840 has 224 divisors, whose sum is σ = 16101486720. Its totient is φ = 1198080000.

The previous prime is 4528491767. The next prime is 4528491871. The reversal of 4528491840 is 481948254.

4528491840 is a `hidden beast` number, since 4 + 528 + 49 + 1 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129840 + ... + 1133840.

Almost surely, 2^4528491840 is an apocalyptic number.

4528491840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4528491840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8050743360).

4528491840 is an abundant number, since it is smaller than the sum of its proper divisors (11572994880).

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

4528491840 is a wasteful number, since it uses less digits than its factorization.

4528491840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158 (or 4142 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 4528491840 is about 67294.0698724635. The cubic root of 4528491840 is about 1654.4406661559.

The spelling of 4528491840 in words is "four billion, five hundred twenty-eight million, four hundred ninety-one thousand, eight hundred forty".