89724970 has 16 divisors (see below), whose sum is σ = 162152928. Its totient is φ = 35746000.

The previous prime is 89724967. The next prime is 89724979. The reversal of 89724970 is 7942798.

It is a self number, because there is not a number n which added to its sum of digits gives 89724970.

It is not an unprimeable number, because it can be changed into a prime (89724979) 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 7 ways as a sum of consecutive naturals, for example, 15364 + ... + 20383.

It is an arithmetic number, because the mean of its divisors is an integer number (10134558).

Almost surely, 2^89724970 is an apocalyptic number.

89724970 is a deficient number, since it is larger than the sum of its proper divisors (72427958).

89724970 is a wasteful number, since it uses less digits than its factorization.

89724970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36005.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 89724970 is about 9472.3265357567. The cubic root of 89724970 is about 447.6835197056.

The spelling of 89724970 in words is "eighty-nine million, seven hundred twenty-four thousand, nine hundred seventy".