20852407 has 2 divisors, whose sum is σ = 20852408. Its totient is φ = 20852406.

The previous prime is 20852393. The next prime is 20852411. The reversal of 20852407 is 70425802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20852407 - 2¹⁵ = 20819639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20852437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10426203 + 10426204.

It is an arithmetic number, because the mean of its divisors is an integer number (10426204).

Almost surely, 2^20852407 is an apocalyptic number.

20852407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20852407 is an equidigital number, since it uses as much as digits as its factorization.

20852407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20852407 is about 4566.4435833589. The cubic root of 20852407 is about 275.2445516070.

The spelling of 20852407 in words is "twenty million, eight hundred fifty-two thousand, four hundred seven".