276871428 has 18 divisors (see below), whose sum is σ = 699869534. Its totient is φ = 92290464.

The previous prime is 276871421. The next prime is 276871433. The reversal of 276871428 is 824178672.

It can be written as a sum of positive squares in only one way, i.e., 276623424 + 248004 = 16632^2 + 498^2 .

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

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (276871421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3845401 + ... + 3845472.

Almost surely, 2^276871428 is an apocalyptic number.

It is an amenable number.

276871428 is an abundant number, since it is smaller than the sum of its proper divisors (422998106).

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

276871428 is a wasteful number, since it uses less digits than its factorization.

276871428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690883 (or 7690878 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 276871428 is about 16639.4539573869. The cubic root of 276871428 is about 651.7675190823.

The spelling of 276871428 in words is "two hundred seventy-six million, eight hundred seventy-one thousand, four hundred twenty-eight".