20738479 has 8 divisors (see below), whose sum is σ = 21808512. Its totient is φ = 19682520.

The previous prime is 20738467. The next prime is 20738483. The reversal of 20738479 is 97483702.

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 20738479 - 2⁵ = 20738447 is a prime.

It is a super-2 number, since 2×20738479² = 860169022466882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738489) 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, 429 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (2726064).

Almost surely, 2^20738479 is an apocalyptic number.

20738479 is a deficient number, since it is larger than the sum of its proper divisors (1070033).

20738479 is a wasteful number, since it uses less digits than its factorization.

20738479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 20738479 is about 4553.9520199493. The cubic root of 20738479 is about 274.7423658730.

The spelling of 20738479 in words is "twenty million, seven hundred thirty-eight thousand, four hundred seventy-nine".