500045400 has 144 divisors (see below), whose sum is σ = 1741685400. Its totient is φ = 133332480.

The previous prime is 500045353. The next prime is 500045423. The reversal of 500045400 is 4540005.

It is a happy number.

It is a super-2 number, since 2×500045400² = 500090804122320000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43456 + ... + 53744.

Almost surely, 2^500045400 is an apocalyptic number.

500045400 is a gapful number since it is divisible by the number (50) 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 500045400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870842700).

500045400 is an abundant number, since it is smaller than the sum of its proper divisors (1241640000).

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

500045400 is a wasteful number, since it uses less digits than its factorization.

500045400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320 (or 10299 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 500045400 is about 22361.6949268163. The cubic root of 500045400 is about 793.7245479263.

Adding to 500045400 its reverse (4540005), we get a palindrome (504585405).

The spelling of 500045400 in words is "five hundred million, forty-five thousand, four hundred".