90941778 has 24 divisors (see below), whose sum is σ = 204339408. Its totient is φ = 30313764.

The previous prime is 90941777. The next prime is 90941791. The reversal of 90941778 is 87714909.

It is not an unprimeable number, because it can be changed into a prime (90941777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93076 + ... + 94047.

It is an arithmetic number, because the mean of its divisors is an integer number (8514142).

Almost surely, 2^90941778 is an apocalyptic number.

90941778 is an abundant number, since it is smaller than the sum of its proper divisors (113397630).

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

90941778 is a wasteful number, since it uses less digits than its factorization.

90941778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187140 (or 187128 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 90941778 is about 9536.3398639101. The cubic root of 90941778 is about 449.6981976349.

It can be divided in two parts, 90941 and 778, that added together give a palindrome (91719).

The spelling of 90941778 in words is "ninety million, nine hundred forty-one thousand, seven hundred seventy-eight".