28977257542 has 16 divisors (see below), whose sum is σ = 45758361600. Its totient is φ = 13724630280.

The previous prime is 28977257497. The next prime is 28977257587. The reversal of 28977257542 is 24575277982.

It is an interprime number because it is at equal distance from previous prime (28977257497) and next prime (28977257587).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386259 + ... + 455137.

It is an arithmetic number, because the mean of its divisors is an integer number (2859897600).

Almost surely, 2^28977257542 is an apocalyptic number.

28977257542 is a deficient number, since it is larger than the sum of its proper divisors (16781104058).

28977257542 is a wasteful number, since it uses less digits than its factorization.

28977257542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79971.

The product of its digits is 19756800, while the sum is 58.

The spelling of 28977257542 in words is "twenty-eight billion, nine hundred seventy-seven million, two hundred fifty-seven thousand, five hundred forty-two".