78208433 has 2 divisors, whose sum is σ = 78208434. Its totient is φ = 78208432.

The previous prime is 78208411. The next prime is 78208513. The reversal of 78208433 is 33480287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64754209 + 13454224 = 8047^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 78208433 - 2⁶ = 78208369 is a prime.

It is a super-2 number, since 2×78208433² = 12233117984630978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78208393 and 78208402.

It is not a weakly prime, because it can be changed into another prime (78204433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39104216 + 39104217.

It is an arithmetic number, because the mean of its divisors is an integer number (39104217).

Almost surely, 2^78208433 is an apocalyptic number.

It is an amenable number.

78208433 is a deficient number, since it is larger than the sum of its proper divisors (1).

78208433 is an equidigital number, since it uses as much as digits as its factorization.

78208433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 78208433 is about 8843.5531886228. The cubic root of 78208433 is about 427.6461121796.

The spelling of 78208433 in words is "seventy-eight million, two hundred eight thousand, four hundred thirty-three".