900780 has 24 divisors (see below), whose sum is σ = 2522352. Its totient is φ = 240192.

The previous prime is 900773. The next prime is 900797. The reversal of 900780 is 87009.

It is a super-2 number, since 2×900780² = 1622809216800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 900780.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7447 + ... + 7566.

It is an arithmetic number, because the mean of its divisors is an integer number (105098).

2⁹⁰⁰⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

900780 is an abundant number, since it is smaller than the sum of its proper divisors (1621572).

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

900780 is a wasteful number, since it uses less digits than its factorization.

900780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15025 (or 15023 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 900780 is about 949.0943051141. The cubic root of 900780 is about 96.5768223223.

Adding to 900780 its reverse (87009), we get a palindrome (987789).

The spelling of 900780 in words is "nine hundred thousand, seven hundred eighty".