20027764 has 24 divisors (see below), whose sum is σ = 36108800. Its totient is φ = 9715680.

The previous prime is 20027741. The next prime is 20027783. The reversal of 20027764 is 46772002.

20027764 = T₂₇₇ + T₂₇₈ + ... + T₅₂₀.

It is a super-2 number, since 2×20027764² = 802222661679392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18757 + ... + 19795.

Almost surely, 2^20027764 is an apocalyptic number.

It is an amenable number.

20027764 is a deficient number, since it is larger than the sum of its proper divisors (16081036).

20027764 is a wasteful number, since it uses less digits than its factorization.

20027764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20027764 is about 4475.2389880318. The cubic root of 20027764 is about 271.5673087338.

Adding to 20027764 its reverse (46772002), we get a palindrome (66799766).

The spelling of 20027764 in words is "twenty million, twenty-seven thousand, seven hundred sixty-four".