90378582 has 32 divisors (see below), whose sum is σ = 206898432. Its totient is φ = 25782624.

The previous prime is 90378581. The next prime is 90378593. The reversal of 90378582 is 28587309.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90378581) 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, 35868 + ... + 38304.

It is an arithmetic number, because the mean of its divisors is an integer number (6465576).

Almost surely, 2^90378582 is an apocalyptic number.

90378582 is an abundant number, since it is smaller than the sum of its proper divisors (116519850).

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

90378582 is a wasteful number, since it uses less digits than its factorization.

90378582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 90378582 is about 9506.7650649419. The cubic root of 90378582 is about 448.7679583030.

The spelling of 90378582 in words is "ninety million, three hundred seventy-eight thousand, five hundred eighty-two".