1072215726 has 16 divisors (see below), whose sum is σ = 2147971584. Its totient is φ = 356815224.

The previous prime is 1072215719. The next prime is 1072215757. The reversal of 1072215726 is 6275122701.

It is a super-2 number, since 2×1072215726² = 2299293126163414152, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143560 + ... + 150843.

It is an arithmetic number, because the mean of its divisors is an integer number (134248224).

Almost surely, 2^1072215726 is an apocalyptic number.

1072215726 is an abundant number, since it is smaller than the sum of its proper divisors (1075755858).

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

1072215726 is a wasteful number, since it uses less digits than its factorization.

1072215726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295015.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1072215726 is about 32744.7053124623. The cubic root of 1072215726 is about 1023.5146364910.

The spelling of 1072215726 in words is "one billion, seventy-two million, two hundred fifteen thousand, seven hundred twenty-six".