28923048 has 256 divisors, whose sum is σ = 105062400. Its totient is φ = 7153920.

The previous prime is 28923043. The next prime is 28923061. The reversal of 28923048 is 84032982.

It is a super-2 number, since 2×28923048² = 1673085411220608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28923043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 615361 + ... + 615407.

It is an arithmetic number, because the mean of its divisors is an integer number (410400).

Almost surely, 2^28923048 is an apocalyptic number.

28923048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28923048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52531200).

28923048 is an abundant number, since it is smaller than the sum of its proper divisors (76139352).

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

28923048 is a wasteful number, since it uses less digits than its factorization.

28923048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28923048 is about 5378.0152472822. The cubic root of 28923048 is about 306.9596936619.

The spelling of 28923048 in words is "twenty-eight million, nine hundred twenty-three thousand, forty-eight".