28288770654 has 32 divisors (see below), whose sum is σ = 60101712000. Its totient is φ = 8851335264.

The previous prime is 28288770647. The next prime is 28288770703. The reversal of 28288770654 is 45607788282.

It is a super-2 number, since 2×28288770654² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 28288770594 and 28288770603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125864 + ... + 1150715.

It is an arithmetic number, because the mean of its divisors is an integer number (1878178500).

Almost surely, 2^28288770654 is an apocalyptic number.

28288770654 is an abundant number, since it is smaller than the sum of its proper divisors (31812941346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28288770654 is a wasteful number, since it uses less digits than its factorization.

28288770654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276712.

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 28288770654 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred seventy thousand, six hundred fifty-four".