28477706 has 4 divisors (see below), whose sum is σ = 42716562. Its totient is φ = 14238852.

The previous prime is 28477693. The next prime is 28477711. The reversal of 28477706 is 60777482.

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., 27994681 + 483025 = 5291^2 + 695^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7119425 + ... + 7119428.

Almost surely, 2^28477706 is an apocalyptic number.

28477706 is a deficient number, since it is larger than the sum of its proper divisors (14238856).

28477706 is a wasteful number, since it uses less digits than its factorization.

28477706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14238855.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 28477706 is about 5336.4506931105. The cubic root of 28477706 is about 305.3760693007.

The spelling of 28477706 in words is "twenty-eight million, four hundred seventy-seven thousand, seven hundred six".