28642762 has 4 divisors (see below), whose sum is σ = 42964146. Its totient is φ = 14321380.

The previous prime is 28642759. The next prime is 28642769. The reversal of 28642762 is 26724682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16329681 + 12313081 = 4041^2 + 3509^2 .

It is not an unprimeable number, because it can be changed into a prime (28642769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7160689 + ... + 7160692.

Almost surely, 2^28642762 is an apocalyptic number.

28642762 is a deficient number, since it is larger than the sum of its proper divisors (14321384).

28642762 is a wasteful number, since it uses less digits than its factorization.

28642762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14321383.

The product of its digits is 64512, while the sum is 37.

The square root of 28642762 is about 5351.8933098484. The cubic root of 28642762 is about 305.9649168772.

The spelling of 28642762 in words is "twenty-eight million, six hundred forty-two thousand, seven hundred sixty-two".