28151502 has 48 divisors (see below), whose sum is σ = 61063632. Its totient is φ = 8645760.

The previous prime is 28151491. The next prime is 28151537. The reversal of 28151502 is 20515182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88648 + ... + 88964.

It is an arithmetic number, because the mean of its divisors is an integer number (1272159).

Almost surely, 2^28151502 is an apocalyptic number.

28151502 is an abundant number, since it is smaller than the sum of its proper divisors (32912130).

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

28151502 is a wasteful number, since it uses less digits than its factorization.

28151502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 28151502 is about 5305.7989030871. The cubic root of 28151502 is about 304.2055900982.

Adding to 28151502 its reverse (20515182), we get a palindrome (48666684).

The spelling of 28151502 in words is "twenty-eight million, one hundred fifty-one thousand, five hundred two".