342987904 has 64 divisors (see below), whose sum is σ = 784045440. Its totient is φ = 146405376.

The previous prime is 342987899. The next prime is 342987907. The reversal of 342987904 is 409789243.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (342987907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279837 + ... + 281059.

It is an arithmetic number, because the mean of its divisors is an integer number (12250710).

Almost surely, 2^342987904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342987904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392022720).

342987904 is an abundant number, since it is smaller than the sum of its proper divisors (441057536).

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

342987904 is a wasteful number, since it uses less digits than its factorization.

342987904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 342987904 is about 18519.9326132683. The cubic root of 342987904 is about 699.9917713318.

The spelling of 342987904 in words is "three hundred forty-two million, nine hundred eighty-seven thousand, nine hundred four".