91628412 has 96 divisors (see below), whose sum is σ = 238533120. Its totient is φ = 27244800.

The previous prime is 91628363. The next prime is 91628417. The reversal of 91628412 is 21482619.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91628417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529558 + ... + 529730.

It is an arithmetic number, because the mean of its divisors is an integer number (2484720).

Almost surely, 2^91628412 is an apocalyptic number.

91628412 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91628412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119266560).

91628412 is an abundant number, since it is smaller than the sum of its proper divisors (146904708).

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

91628412 is a wasteful number, since it uses less digits than its factorization.

91628412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 321 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 91628412 is about 9572.2730842784. The cubic root of 91628412 is about 450.8271404384.

The spelling of 91628412 in words is "ninety-one million, six hundred twenty-eight thousand, four hundred twelve".