355974138 has 48 divisors (see below), whose sum is σ = 834298920. Its totient is φ = 109043712.

The previous prime is 355974131. The next prime is 355974163. The reversal of 355974138 is 831479553.

It can be written as a sum of positive squares in 4 ways, for example, as 107060409 + 248913729 = 10347^2 + 15777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 355974093 and 355974102.

It is not an unprimeable number, because it can be changed into a prime (355974131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51258 + ... + 57786.

Almost surely, 2^355974138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355974138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417149460).

355974138 is an abundant number, since it is smaller than the sum of its proper divisors (478324782).

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

355974138 is a wasteful number, since it uses less digits than its factorization.

355974138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783 (or 6780 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 355974138 is about 18867.2769100366. The cubic root of 355974138 is about 708.7169434859.

The spelling of 355974138 in words is "three hundred fifty-five million, nine hundred seventy-four thousand, one hundred thirty-eight".