9890628 has 24 divisors (see below), whose sum is σ = 25176480. Its totient is φ = 2997120.

The previous prime is 9890623. The next prime is 9890663. The reversal of 9890628 is 8260989.

9890628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9890628.

It is not an unprimeable number, because it can be changed into a prime (9890623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37333 + ... + 37596.

It is an arithmetic number, because the mean of its divisors is an integer number (1049020).

Almost surely, 2^9890628 is an apocalyptic number.

It is an amenable number.

9890628 is an abundant number, since it is smaller than the sum of its proper divisors (15285852).

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

9890628 is a wasteful number, since it uses less digits than its factorization.

9890628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74947 (or 74945 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 9890628 is about 3144.9368833094. The cubic root of 9890628 is about 214.6551385002.

The spelling of 9890628 in words is "nine million, eight hundred ninety thousand, six hundred twenty-eight".