2629776240 has 640 divisors, whose sum is σ = 11819243520. Its totient is φ = 521551872.

The previous prime is 2629776217. The next prime is 2629776251. The reversal of 2629776240 is 426779262.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3341127 + ... + 3341913.

It is an arithmetic number, because the mean of its divisors is an integer number (18467568).

Almost surely, 2^2629776240 is an apocalyptic number.

2629776240 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 2629776240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5909621760).

2629776240 is an abundant number, since it is smaller than the sum of its proper divisors (9189467280).

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

2629776240 is a wasteful number, since it uses less digits than its factorization.

2629776240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 2629776240 is about 51281.3439761479. The cubic root of 2629776240 is about 1380.2982342202.

The spelling of 2629776240 in words is "two billion, six hundred twenty-nine million, seven hundred seventy-six thousand, two hundred forty".