91200060 has 192 divisors, whose sum is σ = 338688000. Its totient is φ = 19920384.

The previous prime is 91200029. The next prime is 91200061. The reversal of 91200060 is 6000219.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91200061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86416 + ... + 87464.

It is an arithmetic number, because the mean of its divisors is an integer number (1764000).

Almost surely, 2^91200060 is an apocalyptic number.

91200060 is a gapful number since it is divisible by the number (90) 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 91200060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169344000).

91200060 is an abundant number, since it is smaller than the sum of its proper divisors (247487940).

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

91200060 is a wasteful number, since it uses less digits than its factorization.

91200060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 91200060 is about 9549.8722504545. The cubic root of 91200060 is about 450.1235216467.

Adding to 91200060 its reverse (6000219), we get a palindrome (97200279).

The spelling of 91200060 in words is "ninety-one million, two hundred thousand, sixty".