20496157 has 8 divisors (see below), whose sum is σ = 22397760. Its totient is φ = 18600960.

The previous prime is 20496143. The next prime is 20496167. The reversal of 20496157 is 75169402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20496157 - 2¹⁵ = 20463389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20496167) 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, 7248 + ... + 9670.

It is an arithmetic number, because the mean of its divisors is an integer number (2799720).

Almost surely, 2^20496157 is an apocalyptic number.

It is an amenable number.

20496157 is a deficient number, since it is larger than the sum of its proper divisors (1901603).

20496157 is a wasteful number, since it uses less digits than its factorization.

20496157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 20496157 is about 4527.2681608228. The cubic root of 20496157 is about 273.6680806848.

The spelling of 20496157 in words is "twenty million, four hundred ninety-six thousand, one hundred fifty-seven".