28948722 has 32 divisors (see below), whose sum is σ = 66878784. Its totient is φ = 8256000.

The previous prime is 28948691. The next prime is 28948727. The reversal of 28948722 is 22784982.

It is not an unprimeable number, because it can be changed into a prime (28948727) 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, 11779 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (2089962).

Almost surely, 2^28948722 is an apocalyptic number.

28948722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28948722 is an abundant number, since it is smaller than the sum of its proper divisors (37930062).

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

28948722 is a wasteful number, since it uses less digits than its factorization.

28948722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25834.

The product of its digits is 129024, while the sum is 42.

The square root of 28948722 is about 5380.4016578690. The cubic root of 28948722 is about 307.0504926729.

The spelling of 28948722 in words is "twenty-eight million, nine hundred forty-eight thousand, seven hundred twenty-two".