20927401 has 16 divisors (see below), whose sum is σ = 24006528. Its totient is φ = 18057600.

The previous prime is 20927399. The next prime is 20927411. The reversal of 20927401 is 10472902.

It is not a de Polignac number, because 20927401 - 2¹ = 20927399 is a prime.

It is a super-2 number, since 2×20927401² = 875912225229602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20927411) 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, 45565 + ... + 46021.

It is an arithmetic number, because the mean of its divisors is an integer number (1500408).

Almost surely, 2^20927401 is an apocalyptic number.

It is an amenable number.

20927401 is a deficient number, since it is larger than the sum of its proper divisors (3079127).

20927401 is a wasteful number, since it uses less digits than its factorization.

20927401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20927401 is about 4574.6476367038. The cubic root of 20927401 is about 275.5741217751.

The spelling of 20927401 in words is "twenty million, nine hundred twenty-seven thousand, four hundred one".