9619920 has 120 divisors (see below), whose sum is σ = 33426432. Its totient is φ = 2476800.

The previous prime is 9619903. The next prime is 9619937. The reversal of 9619920 is 299169.

It is an interprime number because it is at equal distance from previous prime (9619903) and next prime (9619937).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22105 + ... + 22535.

Almost surely, 2^9619920 is an apocalyptic number.

9619920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9619920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16713216).

9619920 is an abundant number, since it is smaller than the sum of its proper divisors (23806512).

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

9619920 is a wasteful number, since it uses less digits than its factorization.

9619920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 9619920 is about 3101.5995873097. The cubic root of 9619920 is about 212.6786133799.

The spelling of 9619920 in words is "nine million, six hundred nineteen thousand, nine hundred twenty".