78208403 has 8 divisors (see below), whose sum is σ = 96256608. Its totient is φ = 61879104.

The previous prime is 78208399. The next prime is 78208411. The reversal of 78208403 is 30480287.

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

It is not a de Polignac number, because 78208403 - 2² = 78208399 is a prime.

It is a super-2 number, since 2×78208403² = 12233108599620818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78208403.

It is not an unprimeable number, because it can be changed into a prime (78208433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429626 + ... + 429807.

It is an arithmetic number, because the mean of its divisors is an integer number (12032076).

Almost surely, 2^78208403 is an apocalyptic number.

78208403 is a deficient number, since it is larger than the sum of its proper divisors (18048205).

78208403 is a wasteful number, since it uses less digits than its factorization.

78208403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859453.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 78208403 is about 8843.5514924718. The cubic root of 78208403 is about 427.6460574993.

The spelling of 78208403 in words is "seventy-eight million, two hundred eight thousand, four hundred three".