28980342 has 60 divisors (see below), whose sum is σ = 69093420. Its totient is φ = 9077184.

The previous prime is 28980331. The next prime is 28980349. The reversal of 28980342 is 24308982.

It is a junction number, because it is equal to n+sod(n) for n = 28980297 and 28980306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28980349) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 46509 + ... + 47127.

It is an arithmetic number, because the mean of its divisors is an integer number (1151557).

Almost surely, 2^28980342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28980342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34546710).

28980342 is an abundant number, since it is smaller than the sum of its proper divisors (40113078).

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

28980342 is a wasteful number, since it uses less digits than its factorization.

28980342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28980342 is about 5383.3392982423. The cubic root of 28980342 is about 307.1622466422.

The spelling of 28980342 in words is "twenty-eight million, nine hundred eighty thousand, three hundred forty-two".