1629400704 has 64 divisors (see below), whose sum is σ = 4337480640. Its totient is φ = 541956096.

The previous prime is 1629400681. The next prime is 1629400769. The reversal of 1629400704 is 4070049261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182652 + ... + 191364.

It is an arithmetic number, because the mean of its divisors is an integer number (67773135).

Almost surely, 2^1629400704 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 1629400704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168740320).

1629400704 is an abundant number, since it is smaller than the sum of its proper divisors (2708079936).

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

1629400704 is an equidigital number, since it uses as much as digits as its factorization.

1629400704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217 (or 9205 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1629400704 is about 40365.8358516209. The cubic root of 1629400704 is about 1176.7276721878.

Adding to 1629400704 its reverse (4070049261), we get a palindrome (5699449965).

The spelling of 1629400704 in words is "one billion, six hundred twenty-nine million, four hundred thousand, seven hundred four".