20396151 has 8 divisors (see below), whose sum is σ = 30216560. Its totient is φ = 13597416.

The previous prime is 20396119. The next prime is 20396153. The reversal of 20396151 is 15169302.

It is not a de Polignac number, because 20396151 - 2⁵ = 20396119 is a prime.

It is a super-2 number, since 2×20396151² = 832005951229602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 755413 = 20396151 / (2 + 0 + 3 + 9 + 6 + 1 + 5 + 1).

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20396153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377680 + ... + 377733.

It is an arithmetic number, because the mean of its divisors is an integer number (3777070).

Almost surely, 2^20396151 is an apocalyptic number.

20396151 is a deficient number, since it is larger than the sum of its proper divisors (9820409).

20396151 is an equidigital number, since it uses as much as digits as its factorization.

20396151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755422 (or 755416 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 20396151 is about 4516.2098046924. The cubic root of 20396151 is about 273.2222559107. Note that the first 4 decimals are identical.

The spelling of 20396151 in words is "twenty million, three hundred ninety-six thousand, one hundred fifty-one".