72045622 has 8 divisors (see below), whose sum is σ = 117892872. Its totient is φ = 32748000.

The previous prime is 72045619. The next prime is 72045629. The reversal of 72045622 is 22654027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72045629) 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, 1637379 + ... + 1637422.

It is an arithmetic number, because the mean of its divisors is an integer number (14736609).

Almost surely, 2^72045622 is an apocalyptic number.

72045622 is a deficient number, since it is larger than the sum of its proper divisors (45847250).

72045622 is a wasteful number, since it uses less digits than its factorization.

72045622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274814.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 72045622 is about 8487.9692506512. The cubic root of 72045622 is about 416.1046141915.

Adding to 72045622 its reverse (22654027), we get a palindrome (94699649).

The spelling of 72045622 in words is "seventy-two million, forty-five thousand, six hundred twenty-two".