9717420 has 24 divisors (see below), whose sum is σ = 27208944. Its totient is φ = 2591296.

The previous prime is 9717413. The next prime is 9717439. The reversal of 9717420 is 247179.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80919 + ... + 81038.

It is an arithmetic number, because the mean of its divisors is an integer number (1133706).

Almost surely, 2^9717420 is an apocalyptic number.

It is an amenable number.

9717420 is an abundant number, since it is smaller than the sum of its proper divisors (17491524).

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

9717420 is a wasteful number, since it uses less digits than its factorization.

9717420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161969 (or 161967 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 9717420 is about 3117.2776584706. The cubic root of 9717420 is about 213.3947143254.

The spelling of 9717420 in words is "nine million, seven hundred seventeen thousand, four hundred twenty".