91302868 has 6 divisors (see below), whose sum is σ = 159780026. Its totient is φ = 45651432.

The previous prime is 91302863. The next prime is 91302877. The reversal of 91302868 is 86820319.

It can be written as a sum of positive squares in only one way, i.e., 82846404 + 8456464 = 9102^2 + 2908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91302863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11412855 + ... + 11412862.

Almost surely, 2^91302868 is an apocalyptic number.

It is an amenable number.

91302868 is a deficient number, since it is larger than the sum of its proper divisors (68477158).

91302868 is a wasteful number, since it uses less digits than its factorization.

91302868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22825721 (or 22825719 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 91302868 is about 9555.2534241641. The cubic root of 91302868 is about 450.2925965395.

The spelling of 91302868 in words is "ninety-one million, three hundred two thousand, eight hundred sixty-eight".