20770357 has 8 divisors (see below), whose sum is σ = 22260096. Its totient is φ = 19329552.

The previous prime is 20770349. The next prime is 20770361. The reversal of 20770357 is 75307702.

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 20770357 - 2³ = 20770349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770307) 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, 11353 + ... + 13054.

It is an arithmetic number, because the mean of its divisors is an integer number (2782512).

Almost surely, 2^20770357 is an apocalyptic number.

It is an amenable number.

20770357 is a deficient number, since it is larger than the sum of its proper divisors (1489739).

20770357 is a wasteful number, since it uses less digits than its factorization.

20770357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24467.

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 20770357 is about 4557.4507128437. The cubic root of 20770357 is about 274.8830665389.

The spelling of 20770357 in words is "twenty million, seven hundred seventy thousand, three hundred fifty-seven".