28889496 has 24 divisors (see below), whose sum is σ = 78242580. Its totient is φ = 9629808.

The previous prime is 28889479. The next prime is 28889501. The reversal of 28889496 is 69498882.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×28889496³ (a number of 23 digits) contains 333 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 5 ways as a sum of consecutive naturals, for example, 200550 + ... + 200693.

Almost surely, 2^28889496 is an apocalyptic number.

It is an amenable number.

28889496 is an abundant number, since it is smaller than the sum of its proper divisors (49353084).

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

28889496 is a wasteful number, since it uses less digits than its factorization.

28889496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401255 (or 401248 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 28889496 is about 5374.8949757181. The cubic root of 28889496 is about 306.8409521806.

The spelling of 28889496 in words is "twenty-eight million, eight hundred eighty-nine thousand, four hundred ninety-six".