280770026820 has 48 divisors (see below), whose sum is σ = 797228707968. Its totient is φ = 73817470720.

The previous prime is 280770026773. The next prime is 280770026821. The reversal of 280770026820 is 28620077082.

It is not an unprimeable number, because it can be changed into a prime (280770026821) 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, 32949969 + ... + 32958488.

It is an arithmetic number, because the mean of its divisors is an integer number (16608931416).

Almost surely, 2^280770026820 is an apocalyptic number.

280770026820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280770026820 is an abundant number, since it is smaller than the sum of its proper divisors (516458681148).

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

280770026820 is a wasteful number, since it uses less digits than its factorization.

280770026820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65908540 (or 65908538 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 280770026820 in words is "two hundred eighty billion, seven hundred seventy million, twenty-six thousand, eight hundred twenty".