28948422 has 32 divisors (see below), whose sum is σ = 59398272. Its totient is φ = 9402624.

The previous prime is 28948411. The next prime is 28948429. The reversal of 28948422 is 22484982.

It is a super-2 number, since 2×28948422² = 1676022272580168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28948429) 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, 42678 + ... + 43350.

It is an arithmetic number, because the mean of its divisors is an integer number (1856196).

Almost surely, 2^28948422 is an apocalyptic number.

28948422 is an abundant number, since it is smaller than the sum of its proper divisors (30449850).

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

28948422 is a wasteful number, since it uses less digits than its factorization.

28948422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852.

The product of its digits is 73728, while the sum is 39.

The square root of 28948422 is about 5380.3737788373. The cubic root of 28948422 is about 307.0494319989.

The spelling of 28948422 in words is "twenty-eight million, nine hundred forty-eight thousand, four hundred twenty-two".