28880826 has 32 divisors (see below), whose sum is σ = 62415360. Its totient is φ = 8856384.

The previous prime is 28880783. The next prime is 28880827. The reversal of 28880826 is 62808882.

It is a super-2 number, since 2×28880826² = 1668204220884552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28880827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36976 + ... + 37748.

It is an arithmetic number, because the mean of its divisors is an integer number (1950480).

Almost surely, 2^28880826 is an apocalyptic number.

28880826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28880826 is an abundant number, since it is smaller than the sum of its proper divisors (33534534).

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

28880826 is a wasteful number, since it uses less digits than its factorization.

28880826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 28880826 is about 5374.0883878105. The cubic root of 28880826 is about 306.8102538578.

The spelling of 28880826 in words is "twenty-eight million, eight hundred eighty thousand, eight hundred twenty-six".