1072728051 has 4 divisors (see below), whose sum is σ = 1430304072. Its totient is φ = 715152032.

The previous prime is 1072728031. The next prime is 1072728071. The reversal of 1072728051 is 1508272701.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1072728031) and next prime (1072728071).

It is a cyclic number.

It is not a de Polignac number, because 1072728051 - 2²³ = 1064339443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1072728001) 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, 178788006 + ... + 178788011.

It is an arithmetic number, because the mean of its divisors is an integer number (357576018).

Almost surely, 2^1072728051 is an apocalyptic number.

1072728051 is a deficient number, since it is larger than the sum of its proper divisors (357576021).

1072728051 is an equidigital number, since it uses as much as digits as its factorization.

1072728051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357576020.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 1072728051 is about 32752.5273986604. The cubic root of 1072728051 is about 1023.6776287655.

The spelling of 1072728051 in words is "one billion, seventy-two million, seven hundred twenty-eight thousand, fifty-one".