72622141 has 4 divisors (see below), whose sum is σ = 74311072. Its totient is φ = 70933212.

The previous prime is 72622133. The next prime is 72622159. The reversal of 72622141 is 14122627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14122627 = 113 ⋅124979.

It is a cyclic number.

It is not a de Polignac number, because 72622141 - 2³ = 72622133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72622241) 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, 844401 + ... + 844486.

It is an arithmetic number, because the mean of its divisors is an integer number (18577768).

Almost surely, 2^72622141 is an apocalyptic number.

It is an amenable number.

72622141 is a deficient number, since it is larger than the sum of its proper divisors (1688931).

72622141 is a wasteful number, since it uses less digits than its factorization.

72622141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688930.

The product of its digits is 1344, while the sum is 25.

The square root of 72622141 is about 8521.8625311607. The cubic root of 72622141 is about 417.2115755654.

Adding to 72622141 its reverse (14122627), we get a palindrome (86744768).

The spelling of 72622141 in words is "seventy-two million, six hundred twenty-two thousand, one hundred forty-one".