72209274 has 48 divisors (see below), whose sum is σ = 151956000. Its totient is φ = 22867776.

The previous prime is 72209233. The next prime is 72209281. The reversal of 72209274 is 47290227.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484552 + ... + 484700.

It is an arithmetic number, because the mean of its divisors is an integer number (3165750).

Almost surely, 2^72209274 is an apocalyptic number.

72209274 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72209274 is an abundant number, since it is smaller than the sum of its proper divisors (79746726).

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

72209274 is a wasteful number, since it uses less digits than its factorization.

72209274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 72209274 is about 8497.6040152504. The cubic root of 72209274 is about 416.4194371930.

The spelling of 72209274 in words is "seventy-two million, two hundred nine thousand, two hundred seventy-four".