28077137 has 8 divisors (see below), whose sum is σ = 30777312. Its totient is φ = 25401600.

The previous prime is 28077131. The next prime is 28077173. The reversal of 28077137 is 73177082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28077137 - 2⁶ = 28077073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28077097 and 28077106.

It is not an unprimeable number, because it can be changed into a prime (28077131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3728 + ... + 8369.

It is an arithmetic number, because the mean of its divisors is an integer number (3847164).

Almost surely, 2^28077137 is an apocalyptic number.

It is an amenable number.

28077137 is a deficient number, since it is larger than the sum of its proper divisors (2700175).

28077137 is a wasteful number, since it uses less digits than its factorization.

28077137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12319.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 28077137 is about 5298.7863704815. The cubic root of 28077137 is about 303.9374907545.

The spelling of 28077137 in words is "twenty-eight million, seventy-seven thousand, one hundred thirty-seven".