28323702 has 64 divisors (see below), whose sum is σ = 70398720. Its totient is φ = 8366400.

The previous prime is 28323689. The next prime is 28323727. The reversal of 28323702 is 20732382.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23773 + ... + 24935.

It is an arithmetic number, because the mean of its divisors is an integer number (1099980).

Almost surely, 2^28323702 is an apocalyptic number.

28323702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28323702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35199360).

28323702 is an abundant number, since it is smaller than the sum of its proper divisors (42075018).

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

28323702 is a wasteful number, since it uses less digits than its factorization.

28323702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 28323702 is about 5322.0016910933. The cubic root of 28323702 is about 304.8245950145.

The spelling of 28323702 in words is "twenty-eight million, three hundred twenty-three thousand, seven hundred two".