28414557 has 40 divisors (see below), whose sum is σ = 45980000. Its totient is φ = 17426016.

The previous prime is 28414543. The next prime is 28414559. The reversal of 28414557 is 75541482.

It is not a de Polignac number, because 28414557 - 2⁴ = 28414541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28414559) 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 39 ways as a sum of consecutive naturals, for example, 56694 + ... + 57192.

It is an arithmetic number, because the mean of its divisors is an integer number (1149500).

Almost surely, 2^28414557 is an apocalyptic number.

28414557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28414557 is a deficient number, since it is larger than the sum of its proper divisors (17565443).

28414557 is a wasteful number, since it uses less digits than its factorization.

28414557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 558 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 28414557 is about 5330.5306490067. The cubic root of 28414557 is about 305.1501795567.

It can be divided in two parts, 284 and 14557, that added together give a palindrome (14841).

The spelling of 28414557 in words is "twenty-eight million, four hundred fourteen thousand, five hundred fifty-seven".