72103356 has 36 divisors (see below), whose sum is σ = 196282632. Its totient is φ = 22185504.

The previous prime is 72103351. The next prime is 72103357. The reversal of 72103356 is 65330127.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72103351) by changing a digit.

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, 76566 + ... + 77501.

Almost surely, 2^72103356 is an apocalyptic number.

It is an amenable number.

72103356 is an abundant number, since it is smaller than the sum of its proper divisors (124179276).

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

72103356 is a wasteful number, since it uses less digits than its factorization.

72103356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154090 (or 154085 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 72103356 is about 8491.3695008520. The cubic root of 72103356 is about 416.2157334560.

The spelling of 72103356 in words is "seventy-two million, one hundred three thousand, three hundred fifty-six".