28642080 has 48 divisors (see below), whose sum is σ = 90224064. Its totient is φ = 7637760.

The previous prime is 28642079. The next prime is 28642091. The reversal of 28642080 is 8024682.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29356 + ... + 30315.

It is an arithmetic number, because the mean of its divisors is an integer number (1879668).

Almost surely, 2^28642080 is an apocalyptic number.

28642080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28642080 is an abundant number, since it is smaller than the sum of its proper divisors (61581984).

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

28642080 is a wasteful number, since it uses less digits than its factorization.

28642080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59689 (or 59681 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28642080 is about 5351.8295936997. The cubic root of 28642080 is about 305.9624884600.

The spelling of 28642080 in words is "twenty-eight million, six hundred forty-two thousand, eighty".