356490 has 48 divisors (see below), whose sum is σ = 985608. Its totient is φ = 89088.

The previous prime is 356479. The next prime is 356501. The reversal of 356490 is 94653.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (356479) and next prime (356501).

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 74529 = 531^2 + 273^2 .

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1414 + ... + 1646.

2³⁵⁶⁴⁹⁰ is an apocalyptic number.

356490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 356490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492804).

356490 is an abundant number, since it is smaller than the sum of its proper divisors (629118).

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

356490 is a wasteful number, since it uses less digits than its factorization.

356490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 356490 is about 597.0678353420. The cubic root of 356490 is about 70.9059125346.

The spelling of 356490 in words is "three hundred fifty-six thousand, four hundred ninety".