20356077 has 16 divisors (see below), whose sum is σ = 31306880. Its totient is φ = 11524032.

The previous prime is 20356069. The next prime is 20356093. The reversal of 20356077 is 77065302.

It is not a de Polignac number, because 20356077 - 2³ = 20356069 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 (20356027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2158 + ... + 6735.

It is an arithmetic number, because the mean of its divisors is an integer number (1956680).

Almost surely, 2^20356077 is an apocalyptic number.

It is an amenable number.

20356077 is a deficient number, since it is larger than the sum of its proper divisors (10950803).

20356077 is a wasteful number, since it uses less digits than its factorization.

20356077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9012.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 20356077 is about 4511.7709383345. The cubic root of 20356077 is about 273.0431978229.

It can be divided in two parts, 203 and 56077, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 20356077 in words is "twenty million, three hundred fifty-six thousand, seventy-seven".