20754137 has 8 divisors (see below), whose sum is σ = 21896160. Its totient is φ = 19617120.

The previous prime is 20754133. The next prime is 20754179. The reversal of 20754137 is 73145702.

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

It is not a de Polignac number, because 20754137 - 2² = 20754133 is a prime.

It is a super-2 number, since 2×20754137² = 861468405229538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20754131) 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, 9893 + ... + 11805.

It is an arithmetic number, because the mean of its divisors is an integer number (2737020).

Almost surely, 2^20754137 is an apocalyptic number.

It is an amenable number.

20754137 is a deficient number, since it is larger than the sum of its proper divisors (1142023).

20754137 is a wasteful number, since it uses less digits than its factorization.

20754137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20754137 is about 4555.6708616844. The cubic root of 20754137 is about 274.8114939535.

Adding to 20754137 its reverse (73145702), we get a palindrome (93899839).

The spelling of 20754137 in words is "twenty million, seven hundred fifty-four thousand, one hundred thirty-seven".