72284446 has 16 divisors (see below), whose sum is σ = 121845024. Its totient is φ = 31911264.

The previous prime is 72284431. The next prime is 72284479. The reversal of 72284446 is 64448227.

It is a super-2 number, since 2×72284446² = 10450082267053832, which contains 22 as substring.

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, 59841 + ... + 61036.

It is an arithmetic number, because the mean of its divisors is an integer number (7615314).

Almost surely, 2^72284446 is an apocalyptic number.

72284446 is a deficient number, since it is larger than the sum of its proper divisors (49560578).

72284446 is a wasteful number, since it uses less digits than its factorization.

72284446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120915.

The product of its digits is 86016, while the sum is 37.

The square root of 72284446 is about 8502.0259938441. The cubic root of 72284446 is about 416.5638887479.

It can be divided in two parts, 7 and 2284446, that added together give a triangular number (2284453 = T₂₁₃₇).

The spelling of 72284446 in words is "seventy-two million, two hundred eighty-four thousand, four hundred forty-six".