28709092 has 6 divisors (see below), whose sum is σ = 50240918. Its totient is φ = 14354544.

The previous prime is 28709071. The next prime is 28709113. The reversal of 28709092 is 29090782.

It is an interprime number because it is at equal distance from previous prime (28709071) and next prime (28709113).

It can be written as a sum of positive squares in only one way, i.e., 28472896 + 236196 = 5336^2 + 486^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3588633 + ... + 3588640.

Almost surely, 2^28709092 is an apocalyptic number.

It is an amenable number.

28709092 is a deficient number, since it is larger than the sum of its proper divisors (21531826).

28709092 is a wasteful number, since it uses less digits than its factorization.

28709092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177277 (or 7177275 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 28709092 is about 5358.0865987776. The cubic root of 28709092 is about 306.2009160819.

The spelling of 28709092 in words is "twenty-eight million, seven hundred nine thousand, ninety-two".