28876722 has 16 divisors (see below), whose sum is σ = 66004032. Its totient is φ = 8250480.

The previous prime is 28876711. The next prime is 28876733. The reversal of 28876722 is 22767882.

It is an interprime number because it is at equal distance from previous prime (28876711) and next prime (28876733).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 687541 = 28876722 / (2 + 8 + 8 + 7 + 6 + 7 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343729 + ... + 343812.

It is an arithmetic number, because the mean of its divisors is an integer number (4125252).

Almost surely, 2^28876722 is an apocalyptic number.

28876722 is an abundant number, since it is smaller than the sum of its proper divisors (37127310).

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

28876722 is a wasteful number, since it uses less digits than its factorization.

28876722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687553.

The product of its digits is 150528, while the sum is 42.

The square root of 28876722 is about 5373.7065420434. The cubic root of 28876722 is about 306.7957204677.

The spelling of 28876722 in words is "twenty-eight million, eight hundred seventy-six thousand, seven hundred twenty-two".