1234020400 has 60 divisors (see below), whose sum is σ = 3015041400. Its totient is φ = 485232640.

The previous prime is 1234020371. The next prime is 1234020401. The reversal of 1234020400 is 40204321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1234020401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2545 + ... + 49744.

It is an arithmetic number, because the mean of its divisors is an integer number (50250690).

Almost surely, 2^1234020400 is an apocalyptic number.

1234020400 is a gapful number since it is divisible by the number (10) 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 1234020400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507520700).

1234020400 is an abundant number, since it is smaller than the sum of its proper divisors (1781021000).

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

1234020400 is a wasteful number, since it uses less digits than its factorization.

1234020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52366 (or 52355 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1234020400 is about 35128.6265031811. The cubic root of 1234020400 is about 1072.6073774579.

Adding to 1234020400 its reverse (40204321), we get a palindrome (1274224721).

The spelling of 1234020400 in words is "one billion, two hundred thirty-four million, twenty thousand, four hundred".