78349932 has 18 divisors (see below), whose sum is σ = 198051308. Its totient is φ = 26116632.

The previous prime is 78349903. The next prime is 78349933. The reversal of 78349932 is 23994387.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×78349932² = 12277423688809248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78349933) 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 5 ways as a sum of consecutive naturals, for example, 1088158 + ... + 1088229.

Almost surely, 2^78349932 is an apocalyptic number.

It is an amenable number.

78349932 is an abundant number, since it is smaller than the sum of its proper divisors (119701376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78349932 is a wasteful number, since it uses less digits than its factorization.

78349932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176397 (or 2176392 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 78349932 is about 8851.5496948275. The cubic root of 78349932 is about 427.9038637544.

It can be divided in two parts, 7834 and 9932, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 78349932 in words is "seventy-eight million, three hundred forty-nine thousand, nine hundred thirty-two".