28465290270 has 128 divisors (see below), whose sum is σ = 79349760000. Its totient is φ = 7252727040.

The previous prime is 28465290241. The next prime is 28465290277. The reversal of 28465290270 is 7209256482.

28465290270 is a `hidden beast` number, since 284 + 65 + 290 + 27 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28465290277) 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 63 ways as a sum of consecutive naturals, for example, 639706 + ... + 682754.

It is an arithmetic number, because the mean of its divisors is an integer number (619920000).

Almost surely, 2^28465290270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28465290270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39674880000).

28465290270 is an abundant number, since it is smaller than the sum of its proper divisors (50884469730).

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

28465290270 is a wasteful number, since it uses less digits than its factorization.

28465290270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43175 (or 43169 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28465290270 in words is "twenty-eight billion, four hundred sixty-five million, two hundred ninety thousand, two hundred seventy".