20351079 has 24 divisors (see below), whose sum is σ = 33920640. Its totient is φ = 11516688.

The previous prime is 20351077. The next prime is 20351081. The reversal of 20351079 is 97015302.

It is an interprime number because it is at equal distance from previous prime (20351077) and next prime (20351081).

It is not a de Polignac number, because 20351079 - 2¹ = 20351077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20351077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5232 + ... + 8250.

It is an arithmetic number, because the mean of its divisors is an integer number (1413360).

Almost surely, 2^20351079 is an apocalyptic number.

20351079 is a deficient number, since it is larger than the sum of its proper divisors (13569561).

20351079 is a wasteful number, since it uses less digits than its factorization.

20351079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 20351079 is about 4511.2170198296. The cubic root of 20351079 is about 273.0208493516.

The spelling of 20351079 in words is "twenty million, three hundred fifty-one thousand, seventy-nine".