9751980 has 144 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 2136960.

The previous prime is 9751969. The next prime is 9751981. The reversal of 9751980 is 891579.

It is a happy number.

9751980 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9751980² = 190202227840800, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (9751981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91087 + ... + 91193.

It is an arithmetic number, because the mean of its divisors is an integer number (229824).

Almost surely, 2^9751980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9751980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16547328).

9751980 is an abundant number, since it is smaller than the sum of its proper divisors (23342676).

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

9751980 is a wasteful number, since it uses less digits than its factorization.

9751980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 9751980 is about 3122.8160368488. The cubic root of 9751980 is about 213.6473944124.

It can be divided in two parts, 9751 and 980, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 9751980 in words is "nine million, seven hundred fifty-one thousand, nine hundred eighty".