20077438 has 8 divisors (see below), whose sum is σ = 30333240. Its totient is φ = 9966360.

The previous prime is 20077427. The next prime is 20077439. The reversal of 20077438 is 83477002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20077439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35833 + ... + 36388.

It is an arithmetic number, because the mean of its divisors is an integer number (3791655).

Almost surely, 2^20077438 is an apocalyptic number.

20077438 is a deficient number, since it is larger than the sum of its proper divisors (10255802).

20077438 is a wasteful number, since it uses less digits than its factorization.

20077438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72362.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20077438 is about 4480.7854222223. The cubic root of 20077438 is about 271.7916422654.

The spelling of 20077438 in words is "twenty million, seventy-seven thousand, four hundred thirty-eight".