72470000 has 50 divisors (see below), whose sum is σ = 175481328. Its totient is φ = 28984000.

The previous prime is 72469973. The next prime is 72470003. The reversal of 72470000 is 7427.

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72470003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6377 + ... + 13623.

Almost surely, 2^72470000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72470000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87740664).

72470000 is an abundant number, since it is smaller than the sum of its proper divisors (103011328).

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

72470000 is an equidigital number, since it uses as much as digits as its factorization.

72470000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275 (or 7254 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 72470000 is about 8512.9313400262. The cubic root of 72470000 is about 416.9200236911.

Adding to 72470000 its reverse (7427), we get a palindrome (72477427).

The spelling of 72470000 in words is "seventy-two million, four hundred seventy thousand".