72253449 has 12 divisors (see below), whose sum is σ = 104485056. Its totient is φ = 48114072.

The previous prime is 72253427. The next prime is 72253477. The reversal of 72253449 is 94435227.

It is not a de Polignac number, because 72253449 - 2¹¹ = 72251401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72253549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4764 + ... + 12930.

It is an arithmetic number, because the mean of its divisors is an integer number (8707088).

Almost surely, 2^72253449 is an apocalyptic number.

It is an amenable number.

72253449 is a deficient number, since it is larger than the sum of its proper divisors (32231607).

72253449 is a wasteful number, since it uses less digits than its factorization.

72253449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156 (or 9153 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 72253449 is about 8500.2028799317. The cubic root of 72253449 is about 416.5043366235.

It can be divided in two parts, 7225344 and 9, that multiplied together give a square (65028096 = 8064²).

The spelling of 72253449 in words is "seventy-two million, two hundred fifty-three thousand, four hundred forty-nine".