9970020 has 96 divisors (see below), whose sum is σ = 31920000. Its totient is φ = 2581632.

The previous prime is 9970019. The next prime is 9970027. The reversal of 9970020 is 200799.

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 (9970027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19731 + ... + 20229.

It is an arithmetic number, because the mean of its divisors is an integer number (332500).

Almost surely, 2^9970020 is an apocalyptic number.

9970020 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 9970020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15960000).

9970020 is an abundant number, since it is smaller than the sum of its proper divisors (21949980).

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

9970020 is a wasteful number, since it uses less digits than its factorization.

9970020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 9970020 is about 3157.5338477996. The cubic root of 9970020 is about 215.2279536478.

The spelling of 9970020 in words is "nine million, nine hundred seventy thousand, twenty".