1272854016 has 120 divisors (see below), whose sum is σ = 4198441104. Its totient is φ = 363663360.

The previous prime is 1272854003. The next prime is 1272854021. The reversal of 1272854016 is 6104582721.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12526 + ... + 51986.

Almost surely, 2^1272854016 is an apocalyptic number.

1272854016 is a gapful number since it is divisible by the number (16) 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 1272854016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2099220552).

1272854016 is an abundant number, since it is smaller than the sum of its proper divisors (2925587088).

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

1272854016 is an equidigital number, since it uses as much as digits as its factorization.

1272854016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39492 (or 39473 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1272854016 is about 35677.0797011190. The cubic root of 1272854016 is about 1083.7427347525.

The spelling of 1272854016 in words is "one billion, two hundred seventy-two million, eight hundred fifty-four thousand, sixteen".