28372626 has 64 divisors (see below), whose sum is σ = 68981760. Its totient is φ = 8605440.

The previous prime is 28372621. The next prime is 28372627. The reversal of 28372626 is 62627382.

28372626 is a `hidden beast` number, since 28 + 3 + 7 + 2 + 626 = 666.

It is a Cunningham number, because it is equal to 305³+1.

It is a super-2 number, since 2×28372626² = 1610011812271752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28372621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27960 + ... + 28956.

It is an arithmetic number, because the mean of its divisors is an integer number (1077840).

Almost surely, 2^28372626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28372626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34490880).

28372626 is an abundant number, since it is smaller than the sum of its proper divisors (40609134).

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

28372626 is a wasteful number, since it uses less digits than its factorization.

28372626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1050 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 28372626 is about 5326.5960988233. The cubic root of 28372626 is about 305.0000035833. Note that the first 5 decimals are identical.

The spelling of 28372626 in words is "twenty-eight million, three hundred seventy-two thousand, six hundred twenty-six".