345786740 has 24 divisors (see below), whose sum is σ = 782010600. Its totient is φ = 127675008.

The previous prime is 345786739. The next prime is 345786773. The reversal of 345786740 is 47687543.

It can be written as a sum of positive squares in 4 ways, for example, as 13235044 + 332551696 = 3638^2 + 18236^2 .

It is a junction number, because it is equal to n+sod(n) for n = 345786691 and 345786700.

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 7 ways as a sum of consecutive naturals, for example, 664715 + ... + 665234.

It is an arithmetic number, because the mean of its divisors is an integer number (32583775).

Almost surely, 2^345786740 is an apocalyptic number.

It is an amenable number.

345786740 is an abundant number, since it is smaller than the sum of its proper divisors (436223860).

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

345786740 is a wasteful number, since it uses less digits than its factorization.

345786740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329971 (or 1329969 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 345786740 is about 18595.3418898390. The cubic root of 345786740 is about 701.8906304941.

The spelling of 345786740 in words is "three hundred forty-five million, seven hundred eighty-six thousand, seven hundred forty".