90724798 has 8 divisors (see below), whose sum is σ = 136176408. Its totient is φ = 45332664.

The previous prime is 90724793. The next prime is 90724807. The reversal of 90724798 is 89742709.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90724793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10836 + ... + 17287.

It is an arithmetic number, because the mean of its divisors is an integer number (17022051).

Almost surely, 2^90724798 is an apocalyptic number.

90724798 is a deficient number, since it is larger than the sum of its proper divisors (45451610).

90724798 is a wasteful number, since it uses less digits than its factorization.

90724798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29738.

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

The square root of 90724798 is about 9524.9565878276. The cubic root of 90724798 is about 449.3402645242.

The spelling of 90724798 in words is "ninety million, seven hundred twenty-four thousand, seven hundred ninety-eight".