351520422 has 64 divisors (see below), whose sum is σ = 781989120. Its totient is φ = 104457600.

The previous prime is 351520417. The next prime is 351520423. The reversal of 351520422 is 224025153.

It is a junction number, because it is equal to n+sod(n) for n = 351520392 and 351520401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351520423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 942228 + ... + 942600.

It is an arithmetic number, because the mean of its divisors is an integer number (12218580).

Almost surely, 2^351520422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351520422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390994560).

351520422 is an abundant number, since it is smaller than the sum of its proper divisors (430468698).

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

351520422 is a wasteful number, since it uses less digits than its factorization.

351520422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 351520422 is about 18748.8778864230. The cubic root of 351520422 is about 705.7488627318.

Adding to 351520422 its reverse (224025153), we get a palindrome (575545575).

It can be divided in two parts, 3515204 and 22, that added together give a triangular number (3515226 = T₂₆₅₁).

The spelling of 351520422 in words is "three hundred fifty-one million, five hundred twenty thousand, four hundred twenty-two".