90078048 has 96 divisors (see below), whose sum is σ = 264993120. Its totient is φ = 29767680.

The previous prime is 90078047. The next prime is 90078049. The reversal of 90078048 is 84087009.

It is an interprime number because it is at equal distance from previous prime (90078047) and next prime (90078049).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×90078048² = 16228109462980608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90078041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117988 + ... + 118748.

It is an arithmetic number, because the mean of its divisors is an integer number (2760345).

Almost surely, 2^90078048 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 90078048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132496560).

90078048 is an abundant number, since it is smaller than the sum of its proper divisors (174915072).

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

90078048 is a wasteful number, since it uses less digits than its factorization.

90078048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 90078048 is about 9490.9455798672. The cubic root of 90078048 is about 448.2699797005.

The spelling of 90078048 in words is "ninety million, seventy-eight thousand, forty-eight".