91628070 has 32 divisors (see below), whose sum is σ = 231482880. Its totient is φ = 23148000.

The previous prime is 91627981. The next prime is 91628077. The reversal of 91628070 is 7082619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91628077) 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, 79806 + ... + 80945.

It is an arithmetic number, because the mean of its divisors is an integer number (7233840).

Almost surely, 2^91628070 is an apocalyptic number.

91628070 is an abundant number, since it is smaller than the sum of its proper divisors (139854810).

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

91628070 is a wasteful number, since it uses less digits than its factorization.

91628070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160780.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 91628070 is about 9572.2552201662. The cubic root of 91628070 is about 450.8265795386.

The spelling of 91628070 in words is "ninety-one million, six hundred twenty-eight thousand, seventy".