72206424 has 32 divisors (see below), whose sum is σ = 200574000. Its totient is φ = 24068736.

The previous prime is 72206423. The next prime is 72206437. The reversal of 72206424 is 42460227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72206423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166929 + ... + 167360.

Almost surely, 2^72206424 is an apocalyptic number.

It is an amenable number.

72206424 is an abundant number, since it is smaller than the sum of its proper divisors (128367576).

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

72206424 is a wasteful number, since it uses less digits than its factorization.

72206424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334304 (or 334294 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 72206424 is about 8497.4363192671. The cubic root of 72206424 is about 416.4139586215.

The spelling of 72206424 in words is "seventy-two million, two hundred six thousand, four hundred twenty-four".