28348488 has 64 divisors (see below), whose sum is σ = 90000000. Its totient is φ = 8099136.

The previous prime is 28348487. The next prime is 28348499. The reversal of 28348488 is 88484382.

It is a happy number.

It is a super-2 number, since 2×28348488² = 1607273543772288, 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 not an unprimeable number, because it can be changed into a prime (28348487) 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, 7863 + ... + 10886.

It is an arithmetic number, because the mean of its divisors is an integer number (1406250).

Almost surely, 2^28348488 is an apocalyptic number.

28348488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28348488 is an abundant number, since it is smaller than the sum of its proper divisors (61651512).

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

28348488 is a wasteful number, since it uses less digits than its factorization.

28348488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771 (or 18761 counting only the distinct ones).

The product of its digits is 393216, while the sum is 45.

The square root of 28348488 is about 5324.3298169817. The cubic root of 28348488 is about 304.9134861675.

The spelling of 28348488 in words is "twenty-eight million, three hundred forty-eight thousand, four hundred eighty-eight".