91254072 has 192 divisors, whose sum is σ = 294174720. Its totient is φ = 23369472.

The previous prime is 91254047. The next prime is 91254073. The reversal of 91254072 is 27045219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91254073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 718473 + ... + 718599.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^91254072 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 91254072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147087360).

91254072 is an abundant number, since it is smaller than the sum of its proper divisors (202920648).

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

91254072 is a wasteful number, since it uses less digits than its factorization.

91254072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 91254072 is about 9552.6997231149. The cubic root of 91254072 is about 450.2123639630.

The spelling of 91254072 in words is "ninety-one million, two hundred fifty-four thousand, seventy-two".