350910021 has 96 divisors (see below), whose sum is σ = 625121280. Its totient is φ = 172972800.

The previous prime is 350909963. The next prime is 350910023. The reversal of 350910021 is 120019053.

It is not a de Polignac number, because 350910021 - 2⁷ = 350909893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 350910021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350910023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4441860 + ... + 4441938.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^350910021 is an apocalyptic number.

It is an amenable number.

350910021 is a deficient number, since it is larger than the sum of its proper divisors (274211259).

350910021 is a wasteful number, since it uses less digits than its factorization.

350910021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 350910021 is about 18732.5924794194. The cubic root of 350910021 is about 705.3401245996.

Adding to 350910021 its reverse (120019053), we get a palindrome (470929074).

It can be divided in two parts, 3509 and 10021, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 350910021 in words is "three hundred fifty million, nine hundred ten thousand, twenty-one".