104778401 has 16 divisors (see below), whose sum is σ = 131961984. Its totient is φ = 80970624.

The previous prime is 104778391. The next prime is 104778449. The reversal of 104778401 is 104877401.

It is not a de Polignac number, because 104778401 - 2⁶ = 104778337 is a prime.

It is a super-2 number, since 2×104778401² = 21957026632233602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104778461) 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, 9476 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (8247624).

Almost surely, 2^104778401 is an apocalyptic number.

It is an amenable number.

104778401 is a deficient number, since it is larger than the sum of its proper divisors (27183583).

104778401 is a wasteful number, since it uses less digits than its factorization.

104778401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26840.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 104778401 is about 10236.1321308393. The cubic root of 104778401 is about 471.4372797508.

The spelling of 104778401 in words is "one hundred four million, seven hundred seventy-eight thousand, four hundred one".