1423064400 has 120 divisors (see below), whose sum is σ = 4681899744. Its totient is φ = 369216000.

The previous prime is 1423064381. The next prime is 1423064417. The reversal of 1423064400 is 44603241.

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

It is a super-2 number, since 2×1423064400² = 4050224573094720000, which contains 22 as substring.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28375 + ... + 60425.

Almost surely, 2^1423064400 is an apocalyptic number.

1423064400 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 1423064400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340949872).

1423064400 is an abundant number, since it is smaller than the sum of its proper divisors (3258835344).

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

1423064400 is a wasteful number, since it uses less digits than its factorization.

1423064400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32109 (or 32098 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1423064400 is about 37723.5258161270. The cubic root of 1423064400 is about 1124.7988183462.

Adding to 1423064400 its reverse (44603241), we get a palindrome (1467667641).

The spelling of 1423064400 in words is "one billion, four hundred twenty-three million, sixty-four thousand, four hundred".