342785520 has 480 divisors, whose sum is σ = 1494904320. Its totient is φ = 70917120.

The previous prime is 342785519. The next prime is 342785557. The reversal of 342785520 is 25587243.

342785520 is a `hidden beast` number, since 34 + 2 + 78 + 552 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1496766 + ... + 1496994.

It is an arithmetic number, because the mean of its divisors is an integer number (3114384).

Almost surely, 2^342785520 is an apocalyptic number.

342785520 is a gapful number since it is divisible by the number (30) 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 342785520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747452160).

342785520 is an abundant number, since it is smaller than the sum of its proper divisors (1152118800).

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

342785520 is a wasteful number, since it uses less digits than its factorization.

342785520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 342785520 is about 18514.4678562469. The cubic root of 342785520 is about 699.8540648158.

The spelling of 342785520 in words is "three hundred forty-two million, seven hundred eighty-five thousand, five hundred twenty".