28655032 has 32 divisors (see below), whose sum is σ = 62277120. Its totient is φ = 12106080.

The previous prime is 28655009. The next prime is 28655041. The reversal of 28655032 is 23055682.

It is a happy number.

It is a super-2 number, since 2×28655032² = 1642221717842048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28654985 and 28655003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373 + ... + 7579.

It is an arithmetic number, because the mean of its divisors is an integer number (1946160).

Almost surely, 2^28655032 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 28655032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31138560).

28655032 is an abundant number, since it is smaller than the sum of its proper divisors (33622088).

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

28655032 is a wasteful number, since it uses less digits than its factorization.

28655032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291 (or 7287 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 28655032 is about 5353.0395104090. The cubic root of 28655032 is about 306.0086004389.

The spelling of 28655032 in words is "twenty-eight million, six hundred fifty-five thousand, thirty-two".