345512400 has 120 divisors (see below), whose sum is σ = 1120449120. Its totient is φ = 91000320.

The previous prime is 345512393. The next prime is 345512449. The reversal of 345512400 is 4215543.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97866 + ... + 101334.

It is an arithmetic number, because the mean of its divisors is an integer number (9337076).

Almost surely, 2^345512400 is an apocalyptic number.

345512400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345512400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560224560).

345512400 is an abundant number, since it is smaller than the sum of its proper divisors (774936720).

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

345512400 is a wasteful number, since it uses less digits than its factorization.

345512400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573 (or 3562 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 345512400 is about 18587.9638476085. The cubic root of 345512400 is about 701.7049595788.

Adding to 345512400 its reverse (4215543), we get a palindrome (349727943).

The spelling of 345512400 in words is "three hundred forty-five million, five hundred twelve thousand, four hundred".