28761384 has 32 divisors (see below), whose sum is σ = 72198720. Its totient is φ = 9547776.

The previous prime is 28761371. The next prime is 28761391. The reversal of 28761384 is 48316782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3837 + ... + 8499.

It is an arithmetic number, because the mean of its divisors is an integer number (2256210).

Almost surely, 2^28761384 is an apocalyptic number.

28761384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28761384 is an abundant number, since it is smaller than the sum of its proper divisors (43437336).

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

28761384 is a wasteful number, since it uses less digits than its factorization.

28761384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929 (or 4925 counting only the distinct ones).

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

The square root of 28761384 is about 5362.9641057908. The cubic root of 28761384 is about 306.3867125834.

The spelling of 28761384 in words is "twenty-eight million, seven hundred sixty-one thousand, three hundred eighty-four".