1071745272 has 72 divisors (see below), whose sum is σ = 3143134800. Its totient is φ = 329764032.

The previous prime is 1071745267. The next prime is 1071745273. The reversal of 1071745272 is 2725471701.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1071745272² = 2297275856108707968, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071745273) 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 17 ways as a sum of consecutive naturals, for example, 31872 + ... + 56207.

It is an arithmetic number, because the mean of its divisors is an integer number (43654650).

Almost surely, 2^1071745272 is an apocalyptic number.

1071745272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1071745272 is an abundant number, since it is smaller than the sum of its proper divisors (2071389528).

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

1071745272 is a wasteful number, since it uses less digits than its factorization.

1071745272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88117 (or 88097 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 1071745272 is about 32737.5208590999. The cubic root of 1071745272 is about 1023.3649194191.

The spelling of 1071745272 in words is "one billion, seventy-one million, seven hundred forty-five thousand, two hundred seventy-two".