72061436 has 24 divisors (see below), whose sum is σ = 136787616. Its totient is φ = 33082880.

The previous prime is 72061417. The next prime is 72061447. The reversal of 72061436 is 63416027.

It is a junction number, because it is equal to n+sod(n) for n = 72061399 and 72061408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10136 + ... + 15711.

It is an arithmetic number, because the mean of its divisors is an integer number (5699484).

Almost surely, 2^72061436 is an apocalyptic number.

It is an amenable number.

72061436 is a deficient number, since it is larger than the sum of its proper divisors (64726180).

72061436 is a wasteful number, since it uses less digits than its factorization.

72061436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25909 (or 25907 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 72061436 is about 8488.9007533367. The cubic root of 72061436 is about 416.1350569248.

The spelling of 72061436 in words is "seventy-two million, sixty-one thousand, four hundred thirty-six".