90428673 has 8 divisors (see below), whose sum is σ = 120868000. Its totient is φ = 60137568.

The previous prime is 90428671. The next prime is 90428683. The reversal of 90428673 is 37682409.

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

It is not a de Polignac number, because 90428673 - 2¹ = 90428671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90428671) 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, 35623 + ... + 38076.

It is an arithmetic number, because the mean of its divisors is an integer number (15108500).

Almost surely, 2^90428673 is an apocalyptic number.

It is an amenable number.

90428673 is a deficient number, since it is larger than the sum of its proper divisors (30439327).

90428673 is a wasteful number, since it uses less digits than its factorization.

90428673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74111.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 90428673 is about 9509.3991923780. The cubic root of 90428673 is about 448.8508506714.

The spelling of 90428673 in words is "ninety million, four hundred twenty-eight thousand, six hundred seventy-three".