28954557 has 16 divisors (see below), whose sum is σ = 44376000. Its totient is φ = 18636912.

The previous prime is 28954547. The next prime is 28954559. The reversal of 28954557 is 75545982.

28954557 is a `hidden beast` number, since 2 + 8 + 95 + 4 + 557 = 666.

It is not a de Polignac number, because 28954557 - 2¹² = 28950461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28954559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17707 + ... + 19272.

It is an arithmetic number, because the mean of its divisors is an integer number (2773500).

Almost surely, 2^28954557 is an apocalyptic number.

28954557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28954557 is a deficient number, since it is larger than the sum of its proper divisors (15421443).

28954557 is a wasteful number, since it uses less digits than its factorization.

28954557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37017 (or 37011 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 28954557 is about 5380.9438763102. The cubic root of 28954557 is about 307.0711213240.

The spelling of 28954557 in words is "twenty-eight million, nine hundred fifty-four thousand, five hundred fifty-seven".