345534440 has 32 divisors (see below), whose sum is σ = 781812000. Its totient is φ = 137438784.

The previous prime is 345534421. The next prime is 345534443. The reversal of 345534440 is 44435543.

It is a super-2 number, since 2×345534440² = 238788098452227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345534397 and 345534406.

It is not an unprimeable number, because it can be changed into a prime (345534443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16970 + ... + 31289.

It is an arithmetic number, because the mean of its divisors is an integer number (24431625).

Almost surely, 2^345534440 is an apocalyptic number.

It is an amenable number.

345534440 is an abundant number, since it is smaller than the sum of its proper divisors (436277560).

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

345534440 is a wasteful number, since it uses less digits than its factorization.

345534440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48449 (or 48445 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

The square root of 345534440 is about 18588.5566949131. The cubic root of 345534440 is about 701.7198796882.

Adding to 345534440 its reverse (44435543), we get a palindrome (389969983).

The spelling of 345534440 in words is "three hundred forty-five million, five hundred thirty-four thousand, four hundred forty".