28542437 has 16 divisors (see below), whose sum is σ = 36457344. Its totient is φ = 21696000.

The previous prime is 28542431. The next prime is 28542457. The reversal of 28542437 is 73424582.

It is a cyclic number.

It is not a de Polignac number, because 28542437 - 2⁴ = 28542421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28542397 and 28542406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28542431) 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, 1364 + ... + 7677.

It is an arithmetic number, because the mean of its divisors is an integer number (2278584).

Almost surely, 2^28542437 is an apocalyptic number.

It is an amenable number.

28542437 is a deficient number, since it is larger than the sum of its proper divisors (7914907).

28542437 is a wasteful number, since it uses less digits than its factorization.

28542437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100.

The product of its digits is 53760, while the sum is 35.

The square root of 28542437 is about 5342.5122367665. The cubic root of 28542437 is about 305.6072716774.

The spelling of 28542437 in words is "twenty-eight million, five hundred forty-two thousand, four hundred thirty-seven".