9920340 has 48 divisors (see below), whose sum is σ = 30864960. Its totient is φ = 2645280.

The previous prime is 9920311. The next prime is 9920347. The reversal of 9920340 is 430299.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8646 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (643020).

Almost surely, 2^9920340 is an apocalyptic number.

9920340 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9920340 is an abundant number, since it is smaller than the sum of its proper divisors (20944620).

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

9920340 is a wasteful number, since it uses less digits than its factorization.

9920340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18389 (or 18381 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 9920340 is about 3149.6571241962. The cubic root of 9920340 is about 214.8698689722.

The spelling of 9920340 in words is "nine million, nine hundred twenty thousand, three hundred forty".