72842373 has 6 divisors (see below), whose sum is σ = 105216774. Its totient is φ = 48561576.

The previous prime is 72842369. The next prime is 72842383. The reversal of 72842373 is 37324827.

72842373 is a `hidden beast` number, since 7 + 284 + 2 + 373 = 666.

It can be written as a sum of positive squares in only one way, i.e., 70862724 + 1979649 = 8418^2 + 1407^2 .

It is not a de Polignac number, because 72842373 - 2² = 72842369 is a prime.

It is a super-2 number, since 2×72842373² = 10612022608542258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72842303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4046790 + ... + 4046807.

It is an arithmetic number, because the mean of its divisors is an integer number (17536129).

Almost surely, 2^72842373 is an apocalyptic number.

It is an amenable number.

72842373 is a deficient number, since it is larger than the sum of its proper divisors (32374401).

72842373 is a wasteful number, since it uses less digits than its factorization.

72842373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093603 (or 8093600 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 72842373 is about 8534.7743379658. The cubic root of 72842373 is about 417.6328915884.

The spelling of 72842373 in words is "seventy-two million, eight hundred forty-two thousand, three hundred seventy-three".