28870622 has 8 divisors (see below), whose sum is σ = 47242872. Its totient is φ = 13123000.

The previous prime is 28870603. The next prime is 28870627. The reversal of 28870622 is 22607882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28870627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656129 + ... + 656172.

It is an arithmetic number, because the mean of its divisors is an integer number (5905359).

Almost surely, 2^28870622 is an apocalyptic number.

28870622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28870622 is a deficient number, since it is larger than the sum of its proper divisors (18372250).

28870622 is a wasteful number, since it uses less digits than its factorization.

28870622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312314.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 28870622 is about 5373.1389336216. The cubic root of 28870622 is about 306.7741161493.

It can be divided in two parts, 28870 and 622, that added together give a palindrome (29492).

The spelling of 28870622 in words is "twenty-eight million, eight hundred seventy thousand, six hundred twenty-two".