352668978 has 80 divisors (see below), whose sum is σ = 859586904. Its totient is φ = 107619840.

The previous prime is 352668949. The next prime is 352668983. The reversal of 352668978 is 879866253.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 341399529 + 11269449 = 18477^2 + 3357^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 100168 + ... + 103628.

Almost surely, 2^352668978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 352668978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429793452).

352668978 is an abundant number, since it is smaller than the sum of its proper divisors (506917926).

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

352668978 is a wasteful number, since it uses less digits than its factorization.

352668978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529 (or 3520 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 352668978 is about 18779.4829002292. The cubic root of 352668978 is about 706.5166804722.

It can be divided in two parts, 35266 and 8978, that added together give a palindrome (44244).

The spelling of 352668978 in words is "three hundred fifty-two million, six hundred sixty-eight thousand, nine hundred seventy-eight".