28037768 has 64 divisors (see below), whose sum is σ = 61992000. Its totient is φ = 11750400.

The previous prime is 28037761. The next prime is 28037783. The reversal of 28037768 is 86773082.

It is a super-2 number, since 2×28037768² = 1572232868843648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28037761) 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, 68348 + ... + 68756.

It is an arithmetic number, because the mean of its divisors is an integer number (968625).

Almost surely, 2^28037768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28037768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30996000).

28037768 is an abundant number, since it is smaller than the sum of its proper divisors (33954232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28037768 is a wasteful number, since it uses less digits than its factorization.

28037768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 28037768 is about 5295.0701600640. The cubic root of 28037768 is about 303.7953666708.

The spelling of 28037768 in words is "twenty-eight million, thirty-seven thousand, seven hundred sixty-eight".