78197433 has 8 divisors (see below), whose sum is σ = 110396448. Its totient is φ = 49065024.

The previous prime is 78197429. The next prime is 78197443. The reversal of 78197433 is 33479187.

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

It is not a de Polignac number, because 78197433 - 2² = 78197429 is a prime.

It is a super-2 number, since 2×78197433² = 12229677055578978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78197443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766591 + ... + 766692.

It is an arithmetic number, because the mean of its divisors is an integer number (13799556).

Almost surely, 2^78197433 is an apocalyptic number.

It is an amenable number.

78197433 is a deficient number, since it is larger than the sum of its proper divisors (32199015).

78197433 is a wasteful number, since it uses less digits than its factorization.

78197433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533303.

The product of its digits is 127008, while the sum is 42.

The square root of 78197433 is about 8842.9312447853. The cubic root of 78197433 is about 427.6260617937.

The spelling of 78197433 in words is "seventy-eight million, one hundred ninety-seven thousand, four hundred thirty-three".