72765092 has 6 divisors (see below), whose sum is σ = 127338918. Its totient is φ = 36382544.

The previous prime is 72765047. The next prime is 72765101. The reversal of 72765092 is 29056727.

It can be written as a sum of positive squares in only one way, i.e., 67502656 + 5262436 = 8216^2 + 2294^2 .

It is a super-2 number, since 2×72765092² = 10589517227536928, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9095633 + ... + 9095640.

It is an arithmetic number, because the mean of its divisors is an integer number (21223153).

Almost surely, 2^72765092 is an apocalyptic number.

It is an amenable number.

72765092 is a deficient number, since it is larger than the sum of its proper divisors (54573826).

72765092 is a wasteful number, since it uses less digits than its factorization.

72765092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18191277 (or 18191275 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 72765092 is about 8530.2457174457. The cubic root of 72765092 is about 417.4851455865.

The spelling of 72765092 in words is "seventy-two million, seven hundred sixty-five thousand, ninety-two".