15828401 has 2 divisors, whose sum is σ = 15828402. Its totient is φ = 15828400.

The previous prime is 15828313. The next prime is 15828409. The reversal of 15828401 is 10482851.

15828401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11397376 + 4431025 = 3376^2 + 2105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15828401 is a prime.

It is not a weakly prime, because it can be changed into another prime (15828409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7914200 + 7914201.

It is an arithmetic number, because the mean of its divisors is an integer number (7914201).

Almost surely, 2^15828401 is an apocalyptic number.

It is an amenable number.

15828401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15828401 is an equidigital number, since it uses as much as digits as its factorization.

15828401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 15828401 is about 3978.4923023678. The cubic root of 15828401 is about 251.0801318730.

The spelling of 15828401 in words is "fifteen million, eight hundred twenty-eight thousand, four hundred one".