10787820 has 48 divisors (see below), whose sum is σ = 31799040. Its totient is φ = 2725056.

The previous prime is 10787807. The next prime is 10787837. The reversal of 10787820 is 2878701.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3592 + ... + 5871.

It is an arithmetic number, because the mean of its divisors is an integer number (662480).

Almost surely, 2^10787820 is an apocalyptic number.

10787820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10787820 is an abundant number, since it is smaller than the sum of its proper divisors (21011220).

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

10787820 is a wasteful number, since it uses less digits than its factorization.

10787820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494 (or 9492 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 10787820 is about 3284.4816942708. The cubic root of 10787820 is about 220.9587632840.

The spelling of 10787820 in words is "ten million, seven hundred eighty-seven thousand, eight hundred twenty".