9774481428 has 18 divisors (see below), whose sum is σ = 24707717034. Its totient is φ = 3258160464.

The previous prime is 9774481363. The next prime is 9774481513. The reversal of 9774481428 is 8241844779.

9774481428 is a `hidden beast` number, since 97 + 74 + 481 + 4 + 2 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5608811664 + 4165669764 = 74892^2 + 64542^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135756651 + ... + 135756722.

Almost surely, 2^9774481428 is an apocalyptic number.

It is an amenable number.

9774481428 is an abundant number, since it is smaller than the sum of its proper divisors (14933235606).

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

9774481428 is a wasteful number, since it uses less digits than its factorization.

9774481428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271513383 (or 271513378 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 9774481428 is about 98865.9771003149. The cubic root of 9774481428 is about 2138.1158940094.

The spelling of 9774481428 in words is "nine billion, seven hundred seventy-four million, four hundred eighty-one thousand, four hundred twenty-eight".