28932980 has 48 divisors (see below), whose sum is σ = 65862720. Its totient is φ = 10633728.

The previous prime is 28932977. The next prime is 28932983. The reversal of 28932980 is 8923982.

It is an interprime number because it is at equal distance from previous prime (28932977) and next prime (28932983).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28932983) 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, 13631 + ... + 15609.

It is an arithmetic number, because the mean of its divisors is an integer number (1372140).

Almost surely, 2^28932980 is an apocalyptic number.

28932980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28932980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32931360).

28932980 is an abundant number, since it is smaller than the sum of its proper divisors (36929740).

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

28932980 is a wasteful number, since it uses less digits than its factorization.

28932980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 28932980 is about 5378.9385570017. The cubic root of 28932980 is about 306.9948256758.

The spelling of 28932980 in words is "twenty-eight million, nine hundred thirty-two thousand, nine hundred eighty".