91070460 has 96 divisors (see below), whose sum is σ = 305148480. Its totient is φ = 22415616.

The previous prime is 91070459. The next prime is 91070521. The reversal of 91070460 is 6407019.

It is a super-2 number, since 2×91070460² = 16587657369223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534 + ... + 13506.

It is an arithmetic number, because the mean of its divisors is an integer number (3178630).

Almost surely, 2^91070460 is an apocalyptic number.

91070460 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 91070460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152574240).

91070460 is an abundant number, since it is smaller than the sum of its proper divisors (214078020).

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

91070460 is a wasteful number, since it uses less digits than its factorization.

91070460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13004 (or 12996 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 91070460 is about 9543.0844070458. The cubic root of 91070460 is about 449.9102043050.

Adding to 91070460 its reverse (6407019), we get a palindrome (97477479).

The spelling of 91070460 in words is "ninety-one million, seventy thousand, four hundred sixty".