72842450 has 54 divisors (see below), whose sum is σ = 145981263. Its totient is φ = 27036800.

The previous prime is 72842443. The next prime is 72842477. The reversal of 72842450 is 5424827.

It can be written as a sum of positive squares in 5 ways, for example, as 47430769 + 25411681 = 6887^2 + 5041^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6035.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1025915 + ... + 1025985.

Almost surely, 2^72842450 is an apocalyptic number.

72842450 is an abundant number, since it is smaller than the sum of its proper divisors (73138813).

72842450 is a wasteful number, since it uses less digits than its factorization.

72842450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 72842450 is about 8534.7788489216. The cubic root of 72842450 is about 417.6330387450.

Multiplying 72842450 by its sum of digits (32), we get a square (2330958400 = 48280²).

The spelling of 72842450 in words is "seventy-two million, eight hundred forty-two thousand, four hundred fifty".