345603840 has 72 divisors (see below), whose sum is σ = 1103784528. Its totient is φ = 92160000.

The previous prime is 345603809. The next prime is 345603871. The reversal of 345603840 is 48306543.

It is an interprime number because it is at equal distance from previous prime (345603809) and next prime (345603871).

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, 41161 + ... + 48840.

Almost surely, 2^345603840 is an apocalyptic number.

345603840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345603840 is an abundant number, since it is smaller than the sum of its proper divisors (758180688).

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

345603840 is an equidigital number, since it uses as much as digits as its factorization.

345603840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90025 (or 90011 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 345603840 is about 18590.4233410646. The cubic root of 345603840 is about 701.7668562883.

It can be divided in two parts, 34560 and 3840, that multiplied together give a square (132710400 = 11520²).

The spelling of 345603840 in words is "three hundred forty-five million, six hundred three thousand, eight hundred forty".