28500722215078 has 16 divisors (see below), whose sum is σ = 42767462082240. Its totient is φ = 14244902481600.

The previous prime is 28500722215067. The next prime is 28500722215081. The reversal of 28500722215078 is 87051222700582.

It is a happy number.

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, 60571203 + ... + 61039921.

It is an arithmetic number, because the mean of its divisors is an integer number (2672966380140).

Almost surely, 2^{28500722215078} is an apocalyptic number.

28500722215078 is a deficient number, since it is larger than the sum of its proper divisors (14266739867162).

28500722215078 is a wasteful number, since it uses less digits than its factorization.

28500722215078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480303.

The product of its (nonzero) digits is 1254400, while the sum is 49.

The spelling of 28500722215078 in words is "twenty-eight trillion, five hundred billion, seven hundred twenty-two million, two hundred fifteen thousand, seventy-eight".