28755161730 has 32 divisors (see below), whose sum is σ = 76680432000. Its totient is φ = 7668043056.

The previous prime is 28755161723. The next prime is 28755161737. The reversal of 28755161730 is 3716155782.

It is a happy number.

28755161730 is a `hidden beast` number, since 2 + 8 + 7 + 551 + 61 + 7 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (28755161723) and next prime (28755161737).

It is a super-2 number, since 2×28755161730² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28755161737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53250030 + ... + 53250569.

It is an arithmetic number, because the mean of its divisors is an integer number (2396263500).

Almost surely, 2^28755161730 is an apocalyptic number.

28755161730 is an abundant number, since it is smaller than the sum of its proper divisors (47925270270).

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

28755161730 is a wasteful number, since it uses less digits than its factorization.

28755161730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106500615 (or 106500609 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

It can be divided in two parts, 287551 and 61730, that added together give a square (349281 = 591²).

The spelling of 28755161730 in words is "twenty-eight billion, seven hundred fifty-five million, one hundred sixty-one thousand, seven hundred thirty".