91207148 has 6 divisors (see below), whose sum is σ = 159612516. Its totient is φ = 45603572.

The previous prime is 91207147. The next prime is 91207153. The reversal of 91207148 is 84170219.

It is not an unprimeable number, because it can be changed into a prime (91207147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11400890 + ... + 11400897.

It is an arithmetic number, because the mean of its divisors is an integer number (26602086).

Almost surely, 2^91207148 is an apocalyptic number.

It is an amenable number.

91207148 is a deficient number, since it is larger than the sum of its proper divisors (68405368).

91207148 is a wasteful number, since it uses less digits than its factorization.

91207148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22801791 (or 22801789 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 91207148 is about 9550.2433476849. The cubic root of 91207148 is about 450.1351824317.

The spelling of 91207148 in words is "ninety-one million, two hundred seven thousand, one hundred forty-eight".