343902090 has 128 divisors (see below), whose sum is σ = 1013760000. Its totient is φ = 74426688.

The previous prime is 343902077. The next prime is 343902101. The reversal of 343902090 is 90209343.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194631 + ... + 196389.

It is an arithmetic number, because the mean of its divisors is an integer number (7920000).

Almost surely, 2^343902090 is an apocalyptic number.

343902090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 343902090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506880000).

343902090 is an abundant number, since it is smaller than the sum of its proper divisors (669857910).

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

343902090 is a wasteful number, since it uses less digits than its factorization.

343902090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 343902090 is about 18544.5973264452. The cubic root of 343902090 is about 700.6131294702.

The spelling of 343902090 in words is "three hundred forty-three million, nine hundred two thousand, ninety".