72204470 has 16 divisors (see below), whose sum is σ = 139965840. Its totient is φ = 26660064.

The previous prime is 72204469. The next prime is 72204479. The reversal of 72204470 is 7440227.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72204479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277580 + ... + 277839.

It is an arithmetic number, because the mean of its divisors is an integer number (8747865).

Almost surely, 2^72204470 is an apocalyptic number.

72204470 is a deficient number, since it is larger than the sum of its proper divisors (67761370).

72204470 is a wasteful number, since it uses less digits than its factorization.

72204470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555439.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 72204470 is about 8497.3213426350. The cubic root of 72204470 is about 416.4102023527.

Adding to 72204470 its reverse (7440227), we get a palindrome (79644697).

The spelling of 72204470 in words is "seventy-two million, two hundred four thousand, four hundred seventy".