72861234 has 24 divisors (see below), whose sum is σ = 146927760. Its totient is φ = 24087672.

The previous prime is 72861203. The next prime is 72861281. The reversal of 72861234 is 43216827.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72861195 and 72861204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192057 + ... + 192435.

It is an arithmetic number, because the mean of its divisors is an integer number (6121990).

Almost surely, 2^72861234 is an apocalyptic number.

72861234 is an abundant number, since it is smaller than the sum of its proper divisors (74066526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72861234 is a wasteful number, since it uses less digits than its factorization.

72861234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 563 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 72861234 is about 8535.8792165775. The cubic root of 72861234 is about 417.6689342281.

The spelling of 72861234 in words is "seventy-two million, eight hundred sixty-one thousand, two hundred thirty-four".