20752246 has 4 divisors (see below), whose sum is σ = 31128372. Its totient is φ = 10376122.

The previous prime is 20752243. The next prime is 20752267. The reversal of 20752246 is 64225702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64225702 = 2 ⋅32112851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5188060 + ... + 5188063.

It is an arithmetic number, because the mean of its divisors is an integer number (7782093).

Almost surely, 2^20752246 is an apocalyptic number.

20752246 is a deficient number, since it is larger than the sum of its proper divisors (10376126).

20752246 is a wasteful number, since it uses less digits than its factorization.

20752246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376125.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 20752246 is about 4555.4633134293. The cubic root of 20752246 is about 274.8031472752.

Adding to 20752246 its reverse (64225702), we get a palindrome (84977948).

The spelling of 20752246 in words is "twenty million, seven hundred fifty-two thousand, two hundred forty-six".