7400072506 has 16 divisors (see below), whose sum is σ = 11540592000. Its totient is φ = 3554491248.

The previous prime is 7400072461. The next prime is 7400072507. The reversal of 7400072506 is 6052700047.

It is a super-2 number, since 2×7400072506² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7400072507) 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, 309030 + ... + 332113.

It is an arithmetic number, because the mean of its divisors is an integer number (721287000).

Almost surely, 2^7400072506 is an apocalyptic number.

7400072506 is a deficient number, since it is larger than the sum of its proper divisors (4140519494).

7400072506 is a wasteful number, since it uses less digits than its factorization.

7400072506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641373.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 7400072506 is about 86023.6741019587. The cubic root of 7400072506 is about 1948.7015248625.

The spelling of 7400072506 in words is "seven billion, four hundred million, seventy-two thousand, five hundred six".