73772444 has 6 divisors (see below), whose sum is σ = 129101784. Its totient is φ = 36886220.

The previous prime is 73772441. The next prime is 73772453. The reversal of 73772444 is 44427737.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 73772398 and 73772407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73772441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9221552 + ... + 9221559.

It is an arithmetic number, because the mean of its divisors is an integer number (21516964).

Almost surely, 2^73772444 is an apocalyptic number.

It is an amenable number.

73772444 is a deficient number, since it is larger than the sum of its proper divisors (55329340).

73772444 is a wasteful number, since it uses less digits than its factorization.

73772444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18443115 (or 18443113 counting only the distinct ones).

The product of its digits is 131712, while the sum is 38.

The square root of 73772444 is about 8589.0886594563. The cubic root of 73772444 is about 419.4028626814.

The spelling of 73772444 in words is "seventy-three million, seven hundred seventy-two thousand, four hundred forty-four".