787220 has 24 divisors (see below), whose sum is σ = 1889664. Its totient is φ = 269856.

The previous prime is 787217. The next prime is 787243. The reversal of 787220 is 22787.

It is a self number, because there is not a number n which added to its sum of digits gives 787220.

It is a congruent number.

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, 2672 + ... + 2951.

It is an arithmetic number, because the mean of its divisors is an integer number (78736).

2⁷⁸⁷²²⁰ is an apocalyptic number.

787220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

787220 is an abundant number, since it is smaller than the sum of its proper divisors (1102444).

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

787220 is a wasteful number, since it uses less digits than its factorization.

787220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639 (or 5637 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 787220 is about 887.2541913116. The cubic root of 787220 is about 92.3347915450.

The spelling of 787220 in words is "seven hundred eighty-seven thousand, two hundred twenty".