9724090 has 8 divisors (see below), whose sum is σ = 17503380. Its totient is φ = 3889632.

The previous prime is 9724087. The next prime is 9724097. The reversal of 9724090 is 904279.

It can be written as a sum of positive squares in 2 ways, for example, as 9628609 + 95481 = 3103^2 + 309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (9724097) 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, 486195 + ... + 486214.

Almost surely, 2^9724090 is an apocalyptic number.

9724090 is a deficient number, since it is larger than the sum of its proper divisors (7779290).

9724090 is a wasteful number, since it uses less digits than its factorization.

9724090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972416.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 9724090 is about 3118.3473186930. The cubic root of 9724090 is about 213.4435275978.

The spelling of 9724090 in words is "nine million, seven hundred twenty-four thousand, ninety".