351012440 has 64 divisors (see below), whose sum is σ = 817581600. Its totient is φ = 135539712.

The previous prime is 351012421. The next prime is 351012449. The reversal of 351012440 is 44210153.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351012449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151934 + ... + 154226.

Almost surely, 2^351012440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351012440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408790800).

351012440 is an abundant number, since it is smaller than the sum of its proper divisors (466569160).

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

351012440 is a wasteful number, since it uses less digits than its factorization.

351012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 351012440 is about 18735.3259912925. The cubic root of 351012440 is about 705.4087397231.

Adding to 351012440 its reverse (44210153), we get a palindrome (395222593).

The spelling of 351012440 in words is "three hundred fifty-one million, twelve thousand, four hundred forty".