354420340 has 48 divisors (see below), whose sum is σ = 782006400. Its totient is φ = 134668160.

The previous prime is 354420289. The next prime is 354420343. The reversal of 354420340 is 43024453.

It is a super-2 number, since 2×354420340² = 251227554811431200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354420343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65955 + ... + 71125.

It is an arithmetic number, because the mean of its divisors is an integer number (16291800).

Almost surely, 2^354420340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 354420340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391003200).

354420340 is an abundant number, since it is smaller than the sum of its proper divisors (427586060).

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

354420340 is a wasteful number, since it uses less digits than its factorization.

354420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5350 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 354420340 is about 18826.0548177254. The cubic root of 354420340 is about 707.6842756892.

Adding to 354420340 its reverse (43024453), we get a palindrome (397444793).

The spelling of 354420340 in words is "three hundred fifty-four million, four hundred twenty thousand, three hundred forty".