28820759145 has 32 divisors (see below), whose sum is σ = 47598655104. Its totient is φ = 14881651200.

The previous prime is 28820759131. The next prime is 28820759147. The reversal of 28820759145 is 54195702882.

It is not a de Polignac number, because 28820759145 - 2⁴ = 28820759129 is a prime.

It is a super-2 number, since 2×28820759145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28820759147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98302 + ... + 259431.

It is an arithmetic number, because the mean of its divisors is an integer number (1487457972).

Almost surely, 2^28820759145 is an apocalyptic number.

It is an amenable number.

28820759145 is a deficient number, since it is larger than the sum of its proper divisors (18777895959).

28820759145 is a wasteful number, since it uses less digits than its factorization.

28820759145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357913.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 28820759145 in words is "twenty-eight billion, eight hundred twenty million, seven hundred fifty-nine thousand, one hundred forty-five".