28901502 has 64 divisors (see below), whose sum is σ = 74019840. Its totient is φ = 8188128.

The previous prime is 28901497. The next prime is 28901507. The reversal of 28901502 is 20510982.

It is an interprime number because it is at equal distance from previous prime (28901497) and next prime (28901507).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59103 + ... + 59589.

It is an arithmetic number, because the mean of its divisors is an integer number (1156560).

Almost surely, 2^28901502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28901502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37009920).

28901502 is an abundant number, since it is smaller than the sum of its proper divisors (45118338).

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

28901502 is a wasteful number, since it uses less digits than its factorization.

28901502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 28901502 is about 5376.0117187372. The cubic root of 28901502 is about 306.8834523136.

It can be divided in two parts, 28901 and 502, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 28901502 in words is "twenty-eight million, nine hundred one thousand, five hundred two".