2036402640 has 80 divisors (see below), whose sum is σ = 7014283200. Its totient is φ = 543040128.

The previous prime is 2036402603. The next prime is 2036402651. The reversal of 2036402640 is 462046302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-4 number, since 4×2036402640⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469230 + ... + 473549.

It is an arithmetic number, because the mean of its divisors is an integer number (87678540).

Almost surely, 2^2036402640 is an apocalyptic number.

2036402640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2036402640 is an abundant number, since it is smaller than the sum of its proper divisors (4977880560).

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

2036402640 is a wasteful number, since it uses less digits than its factorization.

2036402640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942801 (or 942789 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 2036402640 is about 45126.5181462076. The cubic root of 2036402640 is about 1267.5192112210.

Adding to 2036402640 its reverse (462046302), we get a palindrome (2498448942).

The spelling of 2036402640 in words is "two billion, thirty-six million, four hundred two thousand, six hundred forty".