83193378 has 16 divisors (see below), whose sum is σ = 167914560. Its totient is φ = 27476496.

The previous prime is 83193377. The next prime is 83193379. The reversal of 83193378 is 87339138.

It is an interprime number because it is at equal distance from previous prime (83193377) and next prime (83193379).

It is a super-2 number, since 2×83193378² = 13842276286101768, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83193377) 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, 62950 + ... + 64257.

It is an arithmetic number, because the mean of its divisors is an integer number (10494660).

Almost surely, 2^83193378 is an apocalyptic number.

83193378 is an abundant number, since it is smaller than the sum of its proper divisors (84721182).

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

83193378 is a wasteful number, since it uses less digits than its factorization.

83193378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127321.

The product of its digits is 108864, while the sum is 42.

The square root of 83193378 is about 9121.0404011823. The cubic root of 83193378 is about 436.5455708600.

Subtracting 83193378 from its reverse (87339138), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 83193378 in words is "eighty-three million, one hundred ninety-three thousand, three hundred seventy-eight".