1000650400 has 36 divisors (see below), whose sum is σ = 2442839742. Its totient is φ = 400259840.

The previous prime is 1000650383. The next prime is 1000650401. The reversal of 1000650400 is 40560001.

1000650400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 850538896 + 150111504 = 29164^2 + 12252^2 .

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 (1000650401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624607 + ... + 626206.

Almost surely, 2^1000650400 is an apocalyptic number.

1000650400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000650400 is an abundant number, since it is smaller than the sum of its proper divisors (1442189342).

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

1000650400 is a wasteful number, since it uses less digits than its factorization.

1000650400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250833 (or 1250820 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1000650400 is about 31633.0586570442. The cubic root of 1000650400 is about 1000.2167530147.

It can be divided in two parts, 10006 and 50400, that added together give a palindrome (60406).

The spelling of 1000650400 in words is "one billion, six hundred fifty thousand, four hundred".