90819726 has 8 divisors (see below), whose sum is σ = 181639464. Its totient is φ = 30273240.

The previous prime is 90819691. The next prime is 90819727. The reversal of 90819726 is 62791809.

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

90819726 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90819727) 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, 7568305 + ... + 7568316.

It is an arithmetic number, because the mean of its divisors is an integer number (22704933).

Almost surely, 2^90819726 is an apocalyptic number.

90819726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90819726 is a wasteful number, since it uses less digits than its factorization.

90819726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15136626.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 90819726 is about 9529.9384048377. The cubic root of 90819726 is about 449.4969291670.

The spelling of 90819726 in words is "ninety million, eight hundred nineteen thousand, seven hundred twenty-six".