342587640 has 64 divisors (see below), whose sum is σ = 1031680800. Its totient is φ = 91008512.

The previous prime is 342587639. The next prime is 342587647. The reversal of 342587640 is 46785243.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342587647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26974 + ... + 37586.

Almost surely, 2^342587640 is an apocalyptic number.

342587640 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 342587640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515840400).

342587640 is an abundant number, since it is smaller than the sum of its proper divisors (689093160).

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

342587640 is a wasteful number, since it uses less digits than its factorization.

342587640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10896 (or 10892 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 342587640 is about 18509.1231558926. The cubic root of 342587640 is about 699.7193705041.

The spelling of 342587640 in words is "three hundred forty-two million, five hundred eighty-seven thousand, six hundred forty".