2773426656 has 768 divisors, whose sum is σ = 10838016000. Its totient is φ = 609638400.

The previous prime is 2773426651. The next prime is 2773426661. The reversal of 2773426656 is 6566243772.

It is an interprime number because it is at equal distance from previous prime (2773426651) and next prime (2773426661).

It is a super-2 number, since 2×2773426656² = 15383790832422684672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (2540160) is a multiple of the sum of its prime factors (108).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2773426651) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 89465361 + ... + 89465391.

It is an arithmetic number, because the mean of its divisors is an integer number (14112000).

Almost surely, 2^2773426656 is an apocalyptic number.

2773426656 is a gapful number since it is divisible by the number (26) 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 2773426656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5419008000).

2773426656 is an abundant number, since it is smaller than the sum of its proper divisors (8064589344).

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

2773426656 is a wasteful number, since it uses less digits than its factorization.

2773426656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 86 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 48.

The square root of 2773426656 is about 52663.3331265692. Note that the first 3 decimals coincide. The cubic root of 2773426656 is about 1404.9867496207.

The spelling of 2773426656 in words is "two billion, seven hundred seventy-three million, four hundred twenty-six thousand, six hundred fifty-six".