8761428 has 72 divisors (see below), whose sum is σ = 24221288. Its totient is φ = 2654208.

The previous prime is 8761339. The next prime is 8761429. The reversal of 8761428 is 8241678.

It can be written as a sum of positive squares in 4 ways, for example, as 11664 + 8749764 = 108^2 + 2958^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8761392 and 8761401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8761429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45300 + ... + 45492.

Almost surely, 2^8761428 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 8761428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12110644).

8761428 is an abundant number, since it is smaller than the sum of its proper divisors (15459860).

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

8761428 is a wasteful number, since it uses less digits than its factorization.

8761428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 308 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 8761428 is about 2959.9709458034. The cubic root of 8761428 is about 206.1539365314.

It can be divided in two parts, 876 and 1428, that added together give a square (2304 = 48²).

The spelling of 8761428 in words is "eight million, seven hundred sixty-one thousand, four hundred twenty-eight".