72215126 has 8 divisors (see below), whose sum is σ = 108374760. Its totient is φ = 36090208.

The previous prime is 72215123. The next prime is 72215131. The reversal of 72215126 is 62151227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72215095 and 72215104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72215123) 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, 2636 + ... + 12303.

It is an arithmetic number, because the mean of its divisors is an integer number (13546845).

Almost surely, 2^72215126 is an apocalyptic number.

72215126 is a deficient number, since it is larger than the sum of its proper divisors (36159634).

72215126 is a wasteful number, since it uses less digits than its factorization.

72215126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17358.

The product of its digits is 1680, while the sum is 26.

The square root of 72215126 is about 8497.9483406290. The cubic root of 72215126 is about 416.4306860746.

The spelling of 72215126 in words is "seventy-two million, two hundred fifteen thousand, one hundred twenty-six".