28147626 has 72 divisors (see below), whose sum is σ = 69657120. Its totient is φ = 8188128.

The previous prime is 28147591. The next prime is 28147633. The reversal of 28147626 is 62674182.

28147626 is a `hidden beast` number, since 28 + 1 + 4 + 7 + 626 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57555 + ... + 58041.

It is an arithmetic number, because the mean of its divisors is an integer number (967460).

Almost surely, 2^28147626 is an apocalyptic number.

28147626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28147626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34828560).

28147626 is an abundant number, since it is smaller than the sum of its proper divisors (41509494).

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

28147626 is a wasteful number, since it uses less digits than its factorization.

28147626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 524 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 28147626 is about 5305.4336297799. The cubic root of 28147626 is about 304.1916280843.

It can be divided in two parts, 2814 and 7626, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 28147626 in words is "twenty-eight million, one hundred forty-seven thousand, six hundred twenty-six".