28002030 has 96 divisors (see below), whose sum is σ = 80175744. Its totient is φ = 6237504.

The previous prime is 28002019. The next prime is 28002041. The reversal of 28002030 is 3020082.

It is an interprime number because it is at equal distance from previous prime (28002019) and next prime (28002041).

It is a super-2 number, since 2×28002030² = 1568227368241800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62989 + ... + 63431.

It is an arithmetic number, because the mean of its divisors is an integer number (835164).

Almost surely, 2^28002030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28002030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40087872).

28002030 is an abundant number, since it is smaller than the sum of its proper divisors (52173714).

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

28002030 is a wasteful number, since it uses less digits than its factorization.

28002030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 28002030 is about 5291.6944356227. The cubic root of 28002030 is about 303.6662354336. Note that the first 3 decimals are identical.

The spelling of 28002030 in words is "twenty-eight million, two thousand, thirty".