20276920 has 32 divisors (see below), whose sum is σ = 48308400. Its totient is φ = 7633408.

The previous prime is 20276917. The next prime is 20276923. The reversal of 20276920 is 2967202.

20276920 = 126² + 127² + ... + 397².

It is an interprime number because it is at equal distance from previous prime (20276917) and next prime (20276923).

It is a super-2 number, since 2×20276920² = 822306969372800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14230 + ... + 15589.

Almost surely, 2^20276920 is an apocalyptic number.

20276920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20276920 is an abundant number, since it is smaller than the sum of its proper divisors (28031480).

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

20276920 is a wasteful number, since it uses less digits than its factorization.

20276920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29847 (or 29843 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20276920 is about 4502.9901176885. The cubic root of 20276920 is about 272.6888178777.

The spelling of 20276920 in words is "twenty million, two hundred seventy-six thousand, nine hundred twenty".