72011481 has 8 divisors (see below), whose sum is σ = 99112704. Its totient is φ = 46458960.

The previous prime is 72011479. The next prime is 72011491. The reversal of 72011481 is 18411027.

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

It is not a de Polignac number, because 72011481 - 2¹ = 72011479 is a prime.

It is a super-2 number, since 2×72011481² = 10371306791626722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72011431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387066 + ... + 387251.

It is an arithmetic number, because the mean of its divisors is an integer number (12389088).

Almost surely, 2^72011481 is an apocalyptic number.

It is an amenable number.

72011481 is a deficient number, since it is larger than the sum of its proper divisors (27101223).

72011481 is a wasteful number, since it uses less digits than its factorization.

72011481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774351.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 72011481 is about 8485.9578716843. The cubic root of 72011481 is about 416.0388758818.

The spelling of 72011481 in words is "seventy-two million, eleven thousand, four hundred eighty-one".