72253470 has 64 divisors (see below), whose sum is σ = 178214400. Its totient is φ = 18741888.

The previous prime is 72253427. The next prime is 72253477. The reversal of 72253470 is 7435227.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72253477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206856 + ... + 207204.

It is an arithmetic number, because the mean of its divisors is an integer number (2784600).

Almost surely, 2^72253470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72253470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89107200).

72253470 is an abundant number, since it is smaller than the sum of its proper divisors (105960930).

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

72253470 is a wasteful number, since it uses less digits than its factorization.

72253470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 72253470 is about 8500.2041151963. The cubic root of 72253470 is about 416.5043769749.

Adding to 72253470 its reverse (7435227), we get a palindrome (79688697).

The spelling of 72253470 in words is "seventy-two million, two hundred fifty-three thousand, four hundred seventy".