20747240270 has 16 divisors (see below), whose sum is σ = 37617626448. Its totient is φ = 8238319680.

The previous prime is 20747240263. The next prime is 20747240279. The reversal of 20747240270 is 7204274702.

It is a super-2 number, since 2×20747240270² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20747240270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20747240279) 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, 7570616 + ... + 7573355.

It is an arithmetic number, because the mean of its divisors is an integer number (2351101653).

Almost surely, 2^20747240270 is an apocalyptic number.

20747240270 is a deficient number, since it is larger than the sum of its proper divisors (16870386178).

20747240270 is a wasteful number, since it uses less digits than its factorization.

20747240270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15144115.

The product of its (nonzero) digits is 43904, while the sum is 35.

It can be divided in two parts, 207472 and 40270, that added together give a palindrome (247742).

The spelling of 20747240270 in words is "twenty billion, seven hundred forty-seven million, two hundred forty thousand, two hundred seventy".