356538 has 32 divisors (see below), whose sum is σ = 878976. Its totient is φ = 93888.

The previous prime is 356533. The next prime is 356549. The reversal of 356538 is 835653.

It is a super-4 number, since 4×356538⁴ (a number of 23 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (356533) by changing a digit.

356538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220 + ... + 872.

It is an arithmetic number, because the mean of its divisors is an integer number (27468).

2³⁵⁶⁵³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 356538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439488).

356538 is an abundant number, since it is smaller than the sum of its proper divisors (522438).

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

356538 is a wasteful number, since it uses less digits than its factorization.

356538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its digits is 10800, while the sum is 30.

The square root of 356538 is about 597.1080304267. The cubic root of 356538 is about 70.9090947941.

The spelling of 356538 in words is "three hundred fifty-six thousand, five hundred thirty-eight".