28481376 has 96 divisors (see below), whose sum is σ = 93235968. Its totient is φ = 7395840.

The previous prime is 28481363. The next prime is 28481381. The reversal of 28481376 is 67318482.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×28481376² = 1622377557706752, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5466 + ... + 9318.

It is an arithmetic number, because the mean of its divisors is an integer number (971208).

Almost surely, 2^28481376 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 28481376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46617984).

28481376 is an abundant number, since it is smaller than the sum of its proper divisors (64754592).

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

28481376 is a wasteful number, since it uses less digits than its factorization.

28481376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 3876 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 28481376 is about 5336.7945435439. The cubic root of 28481376 is about 305.3891869541.

It can be divided in two parts, 2848 and 1376, that added together give a palindrome (4224).

The spelling of 28481376 in words is "twenty-eight million, four hundred eighty-one thousand, three hundred seventy-six".