90078271 has 8 divisors (see below), whose sum is σ = 93142224. Its totient is φ = 87055680.

The previous prime is 90078269. The next prime is 90078283. The reversal of 90078271 is 17287009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90078271 - 2¹ = 90078269 is a prime.

It is a super-2 number, since 2×90078271² = 16228189812698882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90078211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5880 + ... + 14653.

It is an arithmetic number, because the mean of its divisors is an integer number (11642778).

Almost surely, 2^90078271 is an apocalyptic number.

90078271 is a deficient number, since it is larger than the sum of its proper divisors (3063953).

90078271 is a wasteful number, since it uses less digits than its factorization.

90078271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20681.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 90078271 is about 9490.9573278990. The cubic root of 90078271 is about 448.2703496172.

The spelling of 90078271 in words is "ninety million, seventy-eight thousand, two hundred seventy-one".