91016000 has 112 divisors (see below), whose sum is σ = 233306112. Its totient is φ = 35136000.

The previous prime is 91015987. The next prime is 91016027. The reversal of 91016000 is 61019.

It is a self number, because there is not a number n which added to its sum of digits gives 91016000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247817 + ... + 248183.

Almost surely, 2^91016000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91016000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116653056).

91016000 is an abundant number, since it is smaller than the sum of its proper divisors (142290112).

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

91016000 is a wasteful number, since it uses less digits than its factorization.

91016000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 91016000 is about 9540.2306051793. The cubic root of 91016000 is about 449.8205045443.

Adding to 91016000 its reverse (61019), we get a palindrome (91077019).

The spelling of 91016000 in words is "ninety-one million, sixteen thousand".