20276940 has 24 divisors (see below), whose sum is σ = 56775600. Its totient is φ = 5407168.

The previous prime is 20276923. The next prime is 20276969. The reversal of 20276940 is 4967202.

It is a happy number.

It is a super-2 number, since 2×20276940² = 822308591527200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20276898 and 20276907.

It is an unprimeable number.

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, 168915 + ... + 169034.

It is an arithmetic number, because the mean of its divisors is an integer number (2365650).

Almost surely, 2^20276940 is an apocalyptic number.

20276940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20276940 is an abundant number, since it is smaller than the sum of its proper divisors (36498660).

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

20276940 is a wasteful number, since it uses less digits than its factorization.

20276940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337961 (or 337959 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20276940 is about 4502.9923384345. The cubic root of 20276940 is about 272.6889075326.

The spelling of 20276940 in words is "twenty million, two hundred seventy-six thousand, nine hundred forty".