351042660 has 84 divisors (see below), whose sum is σ = 1105324668. Its totient is φ = 93607488.

The previous prime is 351042649. The next prime is 351042661. The reversal of 351042660 is 66240153.

It can be written as a sum of positive squares in 2 ways, for example, as 243547236 + 107495424 = 15606^2 + 10368^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351042661) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2542 + ... + 26618.

It is an arithmetic number, because the mean of its divisors is an integer number (13158627).

Almost surely, 2^351042660 is an apocalyptic number.

351042660 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 351042660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552662334).

351042660 is an abundant number, since it is smaller than the sum of its proper divisors (754282008).

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

351042660 is a wasteful number, since it uses less digits than its factorization.

351042660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24104 (or 24087 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 351042660 is about 18736.1324717776. The cubic root of 351042660 is about 705.4289829186.

The spelling of 351042660 in words is "three hundred fifty-one million, forty-two thousand, six hundred sixty".