20276730 has 40 divisors (see below), whose sum is σ = 54524052. Its totient is φ = 5406912.

The previous prime is 20276719. The next prime is 20276747. The reversal of 20276730 is 3767202.

It can be written as a sum of positive squares in 2 ways, for example, as 18429849 + 1846881 = 4293^2 + 1359^2 .

It is a super-2 number, since 2×20276730² = 822291558985800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20276694 and 20276703.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11707 + ... + 13326.

Almost surely, 2^20276730 is an apocalyptic number.

20276730 is an abundant number, since it is smaller than the sum of its proper divisors (34247322).

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

20276730 is a wasteful number, since it uses less digits than its factorization.

20276730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052 (or 25043 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20276730 is about 4502.9690205463. The cubic root of 20276730 is about 272.6879661534.

The spelling of 20276730 in words is "twenty million, two hundred seventy-six thousand, seven hundred thirty".