351081472 has 66 divisors (see below), whose sum is σ = 816519642. Its totient is φ = 150441984.

The previous prime is 351081463. The next prime is 351081547. The reversal of 351081472 is 274180153.

It can be written as a sum of positive squares in only one way, i.e., 274763776 + 76317696 = 16576^2 + 8736^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46678 + ... + 53674.

Almost surely, 2^351081472 is an apocalyptic number.

351081472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351081472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408259821).

351081472 is an abundant number, since it is smaller than the sum of its proper divisors (465438170).

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

351081472 is an equidigital number, since it uses as much as digits as its factorization.

351081472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031 (or 7006 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 351081472 is about 18737.1681958614. The cubic root of 351081472 is about 705.4549798546.

The spelling of 351081472 in words is "three hundred fifty-one million, eighty-one thousand, four hundred seventy-two".