72220379 has 8 divisors (see below), whose sum is σ = 90041088. Its totient is φ = 56275560.

The previous prime is 72220363. The next prime is 72220381. The reversal of 72220379 is 97302227.

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

It is not a de Polignac number, because 72220379 - 2⁴ = 72220363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72220679) 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, 468887 + ... + 469040.

It is an arithmetic number, because the mean of its divisors is an integer number (11255136).

Almost surely, 2^72220379 is an apocalyptic number.

72220379 is a deficient number, since it is larger than the sum of its proper divisors (17820709).

72220379 is a wasteful number, since it uses less digits than its factorization.

72220379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937945.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 72220379 is about 8498.2574096105. The cubic root of 72220379 is about 416.4407830237.

The spelling of 72220379 in words is "seventy-two million, two hundred twenty thousand, three hundred seventy-nine".