20377943 has 8 divisors (see below), whose sum is σ = 21549696. Its totient is φ = 19238400.

The previous prime is 20377939. The next prime is 20377949. The reversal of 20377943 is 34977302.

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 20377943 - 2² = 20377939 is a prime.

It is a super-2 number, since 2×20377943² = 830521121822498, 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 (20377949) 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, 6746 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (2693712).

Almost surely, 2^20377943 is an apocalyptic number.

20377943 is a deficient number, since it is larger than the sum of its proper divisors (1171753).

20377943 is a wasteful number, since it uses less digits than its factorization.

20377943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16105.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 20377943 is about 4514.1935049353. The cubic root of 20377943 is about 273.1409282795.

The spelling of 20377943 in words is "twenty million, three hundred seventy-seven thousand, nine hundred forty-three".