9955428 has 36 divisors (see below), whose sum is σ = 27023472. Its totient is φ = 2844240.

The previous prime is 9955417. The next prime is 9955441. The reversal of 9955428 is 8245599.

9955428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9955428² = 198221093326368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a d-powerful number, because it can be written as 9⁵ + 9⁵ + 5² + 5¹⁰ + 4⁸ + 2¹¹ + 8⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 9955428.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7878 + ... + 9053.

It is an arithmetic number, because the mean of its divisors is an integer number (750652).

Almost surely, 2^9955428 is an apocalyptic number.

9955428 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

9955428 is an abundant number, since it is smaller than the sum of its proper divisors (17068044).

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

9955428 is a wasteful number, since it uses less digits than its factorization.

9955428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16952 (or 16943 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 9955428 is about 3155.2223376491. Note that the first 3 decimals coincide. The cubic root of 9955428 is about 215.1229007080.

The spelling of 9955428 in words is "nine million, nine hundred fifty-five thousand, four hundred twenty-eight".