28022927401 has 16 divisors (see below), whose sum is σ = 32108715520. Its totient is φ = 23957856000.

The previous prime is 28022927371. The next prime is 28022927407. The reversal of 28022927401 is 10472922082.

It is a 3-Lehmer number, since φ(28022927401) divides (28022927401-1)³.

It is a cyclic number.

It is not a de Polignac number, because 28022927401 - 2¹³ = 28022919209 is a prime.

It is a super-2 number, since 2×28022927401² (a number of 22 digits) contains 22 as substring.

It is the 167401-st Hogben number.

It is not an unprimeable number, because it can be changed into a prime (28022927407) by changing a digit.

It is a nontrivial repunit in base 167400.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922965 + ... + 4928653.

It is an arithmetic number, because the mean of its divisors is an integer number (2006794720).

Almost surely, 2^28022927401 is an apocalyptic number.

It is an amenable number.

28022927401 is a deficient number, since it is larger than the sum of its proper divisors (4085788119).

28022927401 is an equidigital number, since it uses as much as digits as its factorization.

28022927401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 28022927401 in words is "twenty-eight billion, twenty-two million, nine hundred twenty-seven thousand, four hundred one".