72003470 has 48 divisors (see below), whose sum is σ = 162830304. Its totient is φ = 22440000.

The previous prime is 72003439. The next prime is 72003479. The reversal of 72003470 is 7430027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72003479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4220 + ... + 12720.

It is an arithmetic number, because the mean of its divisors is an integer number (3392298).

Almost surely, 2^72003470 is an apocalyptic number.

72003470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72003470 is an abundant number, since it is smaller than the sum of its proper divisors (90826834).

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

72003470 is a wasteful number, since it uses less digits than its factorization.

72003470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537 (or 8526 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 72003470 is about 8485.4858434859. The cubic root of 72003470 is about 416.0234477353.

Adding to 72003470 its reverse (7430027), we get a palindrome (79433497).

The spelling of 72003470 in words is "seventy-two million, three thousand, four hundred seventy".