351622540 has 24 divisors (see below), whose sum is σ = 739780272. Its totient is φ = 140387520.

The previous prime is 351622501. The next prime is 351622541. The reversal of 351622540 is 45226153.

It is a junction number, because it is equal to n+sod(n) for n = 351622499 and 351622508.

It is not an unprimeable number, because it can be changed into a prime (351622541) 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, 5131 + ... + 27010.

It is an arithmetic number, because the mean of its divisors is an integer number (30824178).

Almost surely, 2^351622540 is an apocalyptic number.

It is an amenable number.

351622540 is an abundant number, since it is smaller than the sum of its proper divisors (388157732).

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

351622540 is a wasteful number, since it uses less digits than its factorization.

351622540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32697 (or 32695 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 351622540 is about 18751.6009983148. The cubic root of 351622540 is about 705.8171970116.

Adding to 351622540 its reverse (45226153), we get a palindrome (396848693).

The spelling of 351622540 in words is "three hundred fifty-one million, six hundred twenty-two thousand, five hundred forty".