20768770 has 32 divisors (see below), whose sum is σ = 42560640. Its totient is φ = 7223040.

The previous prime is 20768753. The next prime is 20768771. The reversal of 20768770 is 7786702.

It is not an unprimeable number, because it can be changed into a prime (20768771) 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, 1575 + ... + 6634.

It is an arithmetic number, because the mean of its divisors is an integer number (1330020).

Almost surely, 2^20768770 is an apocalyptic number.

20768770 is an abundant number, since it is smaller than the sum of its proper divisors (21791870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20768770 is a wasteful number, since it uses less digits than its factorization.

20768770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 20768770 is about 4557.2765990227. The cubic root of 20768770 is about 274.8760653667.

The spelling of 20768770 in words is "twenty million, seven hundred sixty-eight thousand, seven hundred seventy".