345490782 has 64 divisors (see below), whose sum is σ = 866557440. Its totient is φ = 89391744.

The previous prime is 345490781. The next prime is 345490807. The reversal of 345490782 is 287094543.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345490781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22969 + ... + 34907.

It is an arithmetic number, because the mean of its divisors is an integer number (13539960).

Almost surely, 2^345490782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345490782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433278720).

345490782 is an abundant number, since it is smaller than the sum of its proper divisors (521066658).

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

345490782 is a wasteful number, since it uses less digits than its factorization.

345490782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12017.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 345490782 is about 18587.3823331851. The cubic root of 345490782 is about 701.6903245284.

The spelling of 345490782 in words is "three hundred forty-five million, four hundred ninety thousand, seven hundred eighty-two".