1234289620 has 12 divisors (see below), whose sum is σ = 2592008244. Its totient is φ = 493715840.

The previous prime is 1234289603. The next prime is 1234289653. The reversal of 1234289620 is 269824321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 972691344 + 261598276 = 31188^2 + 16174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1234289620.

It is a congruent number.

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, 30857221 + ... + 30857260.

It is an arithmetic number, because the mean of its divisors is an integer number (216000687).

Almost surely, 2^1234289620 is an apocalyptic number.

1234289620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234289620 is an abundant number, since it is smaller than the sum of its proper divisors (1357718624).

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

1234289620 is a wasteful number, since it uses less digits than its factorization.

1234289620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61714490 (or 61714488 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1234289620 is about 35132.4582117449. The cubic root of 1234289620 is about 1072.6853735648.

The spelling of 1234289620 in words is "one billion, two hundred thirty-four million, two hundred eighty-nine thousand, six hundred twenty".