353402490 has 64 divisors (see below), whose sum is σ = 982653696. Its totient is φ = 79667712.

The previous prime is 353402473. The next prime is 353402549. The reversal of 353402490 is 94204353.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3804 + ... + 26856.

It is an arithmetic number, because the mean of its divisors is an integer number (15353964).

Almost surely, 2^353402490 is an apocalyptic number.

353402490 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 353402490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491326848).

353402490 is an abundant number, since it is smaller than the sum of its proper divisors (629251206).

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

353402490 is a wasteful number, since it uses less digits than its factorization.

353402490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23143.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 353402490 is about 18799.0023671470. The cubic root of 353402490 is about 707.0061664752.

The spelling of 353402490 in words is "three hundred fifty-three million, four hundred two thousand, four hundred ninety".