20276390 has 8 divisors (see below), whose sum is σ = 36497520. Its totient is φ = 8110552.

The previous prime is 20276351. The next prime is 20276419. The reversal of 20276390 is 9367202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20276390² = 822263982864200, 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 3 ways as a sum of consecutive naturals, for example, 1013810 + ... + 1013829.

It is an arithmetic number, because the mean of its divisors is an integer number (4562190).

Almost surely, 2^20276390 is an apocalyptic number.

20276390 is a deficient number, since it is larger than the sum of its proper divisors (16221130).

20276390 is a wasteful number, since it uses less digits than its factorization.

20276390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027646.

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

The square root of 20276390 is about 4502.9312675190. The cubic root of 20276390 is about 272.6864420019.

The spelling of 20276390 in words is "twenty million, two hundred seventy-six thousand, three hundred ninety".