73242772 has 6 divisors (see below), whose sum is σ = 128174858. Its totient is φ = 36621384.

The previous prime is 73242737. The next prime is 73242797. The reversal of 73242772 is 27724237.

It can be written as a sum of positive squares in only one way, i.e., 73205136 + 37636 = 8556^2 + 194^2 .

It is a super-3 number, since 3×73242772³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9155343 + ... + 9155350.

Almost surely, 2^73242772 is an apocalyptic number.

It is an amenable number.

73242772 is a deficient number, since it is larger than the sum of its proper divisors (54932086).

73242772 is a wasteful number, since it uses less digits than its factorization.

73242772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310697 (or 18310695 counting only the distinct ones).

The product of its digits is 32928, while the sum is 34.

The square root of 73242772 is about 8558.1991096258. The cubic root of 73242772 is about 418.3967067827.

The spelling of 73242772 in words is "seventy-three million, two hundred forty-two thousand, seven hundred seventy-two".