28762020 has 144 divisors (see below), whose sum is σ = 104186880. Its totient is φ = 6568128.

The previous prime is 28762009. The next prime is 28762021. The reversal of 28762020 is 2026782.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28762021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25917 + ... + 27003.

It is an arithmetic number, because the mean of its divisors is an integer number (723520).

Almost surely, 2^28762020 is an apocalyptic number.

28762020 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 28762020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52093440).

28762020 is an abundant number, since it is smaller than the sum of its proper divisors (75424860).

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

28762020 is a wasteful number, since it uses less digits than its factorization.

28762020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1104 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28762020 is about 5363.0234010304. The cubic root of 28762020 is about 306.3889709415.

The spelling of 28762020 in words is "twenty-eight million, seven hundred sixty-two thousand, twenty".