20077215 has 8 divisors (see below), whose sum is σ = 32123568. Its totient is φ = 10707840.

The previous prime is 20077171. The next prime is 20077217. The reversal of 20077215 is 51277002.

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

It is not a de Polignac number, because 20077215 - 2⁶ = 20077151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20077217) 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, 669226 + ... + 669255.

It is an arithmetic number, because the mean of its divisors is an integer number (4015446).

Almost surely, 2^20077215 is an apocalyptic number.

20077215 is a deficient number, since it is larger than the sum of its proper divisors (12046353).

20077215 is a wasteful number, since it uses less digits than its factorization.

20077215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338489.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 20077215 is about 4480.7605381230. The cubic root of 20077215 is about 271.7906359988.

The spelling of 20077215 in words is "twenty million, seventy-seven thousand, two hundred fifteen".