28623020 has 24 divisors (see below), whose sum is σ = 60341568. Its totient is φ = 11404800.

The previous prime is 28622983. The next prime is 28623037. The reversal of 28623020 is 2032682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (2514232).

Almost surely, 2^28623020 is an apocalyptic number.

28623020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28623020 is an abundant number, since it is smaller than the sum of its proper divisors (31718548).

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

28623020 is a wasteful number, since it uses less digits than its factorization.

28623020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561 (or 5559 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28623020 is about 5350.0485979101. The cubic root of 28623020 is about 305.8946053655.

The spelling of 28623020 in words is "twenty-eight million, six hundred twenty-three thousand, twenty".