91284002 has 8 divisors (see below), whose sum is σ = 138282012. Its totient is φ = 45190000.

The previous prime is 91284001. The next prime is 91284013. The reversal of 91284002 is 20048219.

It can be written as a sum of positive squares in 2 ways, for example, as 82646281 + 8637721 = 9091^2 + 2939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91284002² = 16665538042272008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91284001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225749 + ... + 226152.

Almost surely, 2^91284002 is an apocalyptic number.

91284002 is a deficient number, since it is larger than the sum of its proper divisors (46998010).

91284002 is a wasteful number, since it uses less digits than its factorization.

91284002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452004.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 91284002 is about 9554.2661675296. The cubic root of 91284002 is about 450.2615796047.

The spelling of 91284002 in words is "ninety-one million, two hundred eighty-four thousand, two".