90146078 has 32 divisors (see below), whose sum is σ = 153584640. Its totient is φ = 39312000.

The previous prime is 90146071. The next prime is 90146113. The reversal of 90146078 is 87064109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90146071) 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, 88838 + ... + 89846.

It is an arithmetic number, because the mean of its divisors is an integer number (4799520).

Almost surely, 2^90146078 is an apocalyptic number.

90146078 is a deficient number, since it is larger than the sum of its proper divisors (63438562).

90146078 is a wasteful number, since it uses less digits than its factorization.

90146078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 90146078 is about 9494.5288456037. The cubic root of 90146078 is about 448.3828008723.

The spelling of 90146078 in words is "ninety million, one hundred forty-six thousand, seventy-eight".