2646250000 has 160 divisors (see below), whose sum is σ = 6720685920. Its totient is φ = 1008000000.

The previous prime is 2646249979. The next prime is 2646250001. The reversal of 2646250000 is 526462.

It can be written as a sum of positive squares in 16 ways, for example, as 1170460944 + 1475789056 = 34212^2 + 38416^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2646250001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36249964 + ... + 36250036.

It is an arithmetic number, because the mean of its divisors is an integer number (42004287).

Almost surely, 2^2646250000 is an apocalyptic number.

2646250000 is a gapful number since it is divisible by the number (20) 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 2646250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3360342960).

2646250000 is an abundant number, since it is smaller than the sum of its proper divisors (4074435920).

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

2646250000 is an frugal number, since it uses more digits than its factorization.

2646250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2646250000 is about 51441.7145903983. The cubic root of 2646250000 is about 1383.1744466793.

Adding to 2646250000 its reverse (526462), we get a palindrome (2646776462).

The spelling of 2646250000 in words is "two billion, six hundred forty-six million, two hundred fifty thousand".