351222990 has 32 divisors (see below), whose sum is σ = 845389440. Its totient is φ = 93386784.

The previous prime is 351222967. The next prime is 351223001. The reversal of 351222990 is 99222153.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6460 + ... + 27279.

It is an arithmetic number, because the mean of its divisors is an integer number (26418420).

Almost surely, 2^351222990 is an apocalyptic number.

351222990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

351222990 is an abundant number, since it is smaller than the sum of its proper divisors (494166450).

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

351222990 is a wasteful number, since it uses less digits than its factorization.

351222990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34096.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 351222990 is about 18740.9442131393. The cubic root of 351222990 is about 705.5497547854.

The spelling of 351222990 in words is "three hundred fifty-one million, two hundred twenty-two thousand, nine hundred ninety".