1456840780 has 12 divisors (see below), whose sum is σ = 3059365680. Its totient is φ = 582736304.

The previous prime is 1456840727. The next prime is 1456840783. The reversal of 1456840780 is 870486541.

It is not an unprimeable number, because it can be changed into a prime (1456840783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36421000 + ... + 36421039.

It is an arithmetic number, because the mean of its divisors is an integer number (254947140).

Almost surely, 2^1456840780 is an apocalyptic number.

1456840780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1456840780 is an abundant number, since it is smaller than the sum of its proper divisors (1602524900).

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

1456840780 is a wasteful number, since it uses less digits than its factorization.

1456840780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72842048 (or 72842046 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 1456840780 is about 38168.5836782032. The cubic root of 1456840780 is about 1133.6283455378.

The spelling of 1456840780 in words is "one billion, four hundred fifty-six million, eight hundred forty thousand, seven hundred eighty".