2657078340 has 48 divisors (see below), whose sum is σ = 8502652032. Its totient is φ = 607332096.

The previous prime is 2657078329. The next prime is 2657078341. The reversal of 2657078340 is 438707562.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2657078292 and 2657078301.

It is not an unprimeable number, because it can be changed into a prime (2657078341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3162769 + ... + 3163608.

It is an arithmetic number, because the mean of its divisors is an integer number (177138584).

Almost surely, 2^2657078340 is an apocalyptic number.

2657078340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2657078340 is an abundant number, since it is smaller than the sum of its proper divisors (5845573692).

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

2657078340 is a wasteful number, since it uses less digits than its factorization.

2657078340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326396 (or 6326394 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 2657078340 is about 51546.8557722001. The cubic root of 2657078340 is about 1385.0585090863.

The spelling of 2657078340 in words is "two billion, six hundred fifty-seven million, seventy-eight thousand, three hundred forty".