28018048 has 64 divisors (see below), whose sum is σ = 60318720. Its totient is φ = 12925440.

The previous prime is 28018043. The next prime is 28018073. The reversal of 28018048 is 84081082.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×28018048² = 1570022027460608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28018043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91111 + ... + 91417.

It is an arithmetic number, because the mean of its divisors is an integer number (942480).

Almost surely, 2^28018048 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 28018048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30159360).

28018048 is an abundant number, since it is smaller than the sum of its proper divisors (32300672).

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

28018048 is a wasteful number, since it uses less digits than its factorization.

28018048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 28018048 is about 5293.2077231108. The cubic root of 28018048 is about 303.7241264577.

The spelling of 28018048 in words is "twenty-eight million, eighteen thousand, forty-eight".