28877337 has 16 divisors (see below), whose sum is σ = 44162560. Its totient is φ = 18630000.

The previous prime is 28877327. The next prime is 28877347. The reversal of 28877337 is 73377882.

It is an interprime number because it is at equal distance from previous prime (28877327) and next prime (28877347).

It is not a de Polignac number, because 28877337 - 2⁶ = 28877273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28877292 and 28877301.

It is not an unprimeable number, because it can be changed into a prime (28877327) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 16414 + ... + 18087.

It is an arithmetic number, because the mean of its divisors is an integer number (2760160).

Almost surely, 2^28877337 is an apocalyptic number.

28877337 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28877337 is a deficient number, since it is larger than the sum of its proper divisors (15285223).

28877337 is a wasteful number, since it uses less digits than its factorization.

28877337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34541 (or 34535 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 28877337 is about 5373.7637648114. The cubic root of 28877337 is about 306.7978984391.

The spelling of 28877337 in words is "twenty-eight million, eight hundred seventy-seven thousand, three hundred thirty-seven".