20148767 has 2 divisors, whose sum is σ = 20148768. Its totient is φ = 20148766.

The previous prime is 20148763. The next prime is 20148773. The reversal of 20148767 is 76784102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20148767 - 2² = 20148763 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20148763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10074383 + 10074384.

It is an arithmetic number, because the mean of its divisors is an integer number (10074384).

Almost surely, 2^20148767 is an apocalyptic number.

20148767 is a deficient number, since it is larger than the sum of its proper divisors (1).

20148767 is an equidigital number, since it uses as much as digits as its factorization.

20148767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20148767 is about 4488.7377958620. The cubic root of 20148767 is about 272.1131260623.

The spelling of 20148767 in words is "twenty million, one hundred forty-eight thousand, seven hundred sixty-seven".