28999077 has 16 divisors (see below), whose sum is σ = 39365568. Its totient is φ = 18986240.

The previous prime is 28999057. The next prime is 28999081. The reversal of 28999077 is 77099982.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28999077 - 2¹⁴ = 28982693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44083 + ... + 44735.

It is an arithmetic number, because the mean of its divisors is an integer number (2460348).

Almost surely, 2^28999077 is an apocalyptic number.

It is an amenable number.

28999077 is a deficient number, since it is larger than the sum of its proper divisors (10366491).

28999077 is a wasteful number, since it uses less digits than its factorization.

28999077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 28999077 is about 5385.0791080540. The cubic root of 28999077 is about 307.2284230530.

The spelling of 28999077 in words is "twenty-eight million, nine hundred ninety-nine thousand, seventy-seven".