28893760 has 56 divisors (see below), whose sum is σ = 78638400. Its totient is φ = 9905664.

The previous prime is 28893751. The next prime is 28893769. The reversal of 28893760 is 6739882.

It is an interprime number because it is at equal distance from previous prime (28893751) and next prime (28893769).

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×28893760³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28893769) 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, 4210 + ... + 8689.

Almost surely, 2^28893760 is an apocalyptic number.

28893760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28893760 is an abundant number, since it is smaller than the sum of its proper divisors (49744640).

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

28893760 is a wasteful number, since it uses less digits than its factorization.

28893760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12923 (or 12913 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 28893760 is about 5375.2916199961. The cubic root of 28893760 is about 306.8560476956.

The spelling of 28893760 in words is "twenty-eight million, eight hundred ninety-three thousand, seven hundred sixty".