354023440 has 20 divisors (see below), whose sum is σ = 823104684. Its totient is φ = 141609344.

The previous prime is 354023431. The next prime is 354023471. The reversal of 354023440 is 44320453.

It can be written as a sum of positive squares in 2 ways, for example, as 271722256 + 82301184 = 16484^2 + 9072^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212567 + ... + 2212726.

Almost surely, 2^354023440 is an apocalyptic number.

It is an amenable number.

354023440 is an abundant number, since it is smaller than the sum of its proper divisors (469081244).

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

354023440 is a wasteful number, since it uses less digits than its factorization.

354023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425306 (or 4425300 counting only the distinct ones).

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

The square root of 354023440 is about 18815.5106228877. The cubic root of 354023440 is about 707.4200086866.

Adding to 354023440 its reverse (44320453), we get a palindrome (398343893).

The spelling of 354023440 in words is "three hundred fifty-four million, twenty-three thousand, four hundred forty".