351481860 has 144 divisors (see below), whose sum is σ = 1128726144. Its totient is φ = 88349184.

The previous prime is 351481853. The next prime is 351481873. The reversal of 351481860 is 68184153.

351481860 is a `hidden beast` number, since 3 + 514 + 81 + 8 + 60 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 301639 + ... + 302801.

It is an arithmetic number, because the mean of its divisors is an integer number (7838376).

Almost surely, 2^351481860 is an apocalyptic number.

351481860 is a gapful number since it is divisible by the number (30) 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 351481860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564363072).

351481860 is an abundant number, since it is smaller than the sum of its proper divisors (777244284).

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

351481860 is a wasteful number, since it uses less digits than its factorization.

351481860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 351481860 is about 18747.8494766733. The cubic root of 351481860 is about 705.7230547643.

The spelling of 351481860 in words is "three hundred fifty-one million, four hundred eighty-one thousand, eight hundred sixty".