90754840 has 96 divisors (see below), whose sum is σ = 237867840. Its totient is φ = 31032320.

The previous prime is 90754831. The next prime is 90754843. The reversal of 90754840 is 4845709.

It is a self number, because there is not a number n which added to its sum of digits gives 90754840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90754843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81729 + ... + 82831.

It is an arithmetic number, because the mean of its divisors is an integer number (2477790).

Almost surely, 2^90754840 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 90754840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118933920).

90754840 is an abundant number, since it is smaller than the sum of its proper divisors (147113000).

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

90754840 is a wasteful number, since it uses less digits than its factorization.

90754840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 90754840 is about 9526.5334723602. The cubic root of 90754840 is about 449.3898562227.

The spelling of 90754840 in words is "ninety million, seven hundred fifty-four thousand, eight hundred forty".