90478071 has 12 divisors (see below), whose sum is σ = 130978848. Its totient is φ = 60185664.

The previous prime is 90478033. The next prime is 90478081. The reversal of 90478071 is 17087409.

It is not a de Polignac number, because 90478071 - 2⁶ = 90478007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90478081) 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, 6690 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (10914904).

Almost surely, 2^90478071 is an apocalyptic number.

90478071 is a deficient number, since it is larger than the sum of its proper divisors (40500777).

90478071 is a wasteful number, since it uses less digits than its factorization.

90478071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22182 (or 22179 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90478071 is about 9511.9961627410. The cubic root of 90478071 is about 448.9325662655.

The spelling of 90478071 in words is "ninety million, four hundred seventy-eight thousand, seventy-one".