20726064 has 40 divisors (see below), whose sum is σ = 59492720. Its totient is φ = 6908544.

The previous prime is 20726047. The next prime is 20726081. The reversal of 20726064 is 46062702.

It is an interprime number because it is at equal distance from previous prime (20726047) and next prime (20726081).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23557 + ... + 24420.

It is an arithmetic number, because the mean of its divisors is an integer number (1487318).

Almost surely, 2^20726064 is an apocalyptic number.

20726064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20726064 is an abundant number, since it is smaller than the sum of its proper divisors (38766656).

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

20726064 is a wasteful number, since it uses less digits than its factorization.

20726064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47994 (or 47982 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20726064 is about 4552.5887141274. The cubic root of 20726064 is about 274.6875304896.

Adding to 20726064 its reverse (46062702), we get a palindrome (66788766).

The spelling of 20726064 in words is "twenty million, seven hundred twenty-six thousand, sixty-four".