20273690 has 32 divisors (see below), whose sum is σ = 39896064. Its totient is φ = 7384320.

The previous prime is 20273681. The next prime is 20273699. The reversal of 20273690 is 9637202.

It is an interprime number because it is at equal distance from previous prime (20273681) and next prime (20273699).

It is a super-2 number, since 2×20273690² = 822045012432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20273699) 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, 3347 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (1246752).

Almost surely, 2^20273690 is an apocalyptic number.

20273690 is a deficient number, since it is larger than the sum of its proper divisors (19622374).

20273690 is a wasteful number, since it uses less digits than its factorization.

20273690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 20273690 is about 4502.6314528284. The cubic root of 20273690 is about 272.6743378408.

The spelling of 20273690 in words is "twenty million, two hundred seventy-three thousand, six hundred ninety".