72378194 has 48 divisors (see below), whose sum is σ = 133265088. Its totient is φ = 29338848.

The previous prime is 72378169. The next prime is 72378221. The reversal of 72378194 is 49187327.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (84672) is a multiple of the sum of its prime divisors (392).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367304 + ... + 367500.

It is an arithmetic number, because the mean of its divisors is an integer number (2776356).

Almost surely, 2^72378194 is an apocalyptic number.

72378194 is a deficient number, since it is larger than the sum of its proper divisors (60886894).

72378194 is a wasteful number, since it uses less digits than its factorization.

72378194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 392 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 72378194 is about 8507.5374815513. The cubic root of 72378194 is about 416.7438959424.

The spelling of 72378194 in words is "seventy-two million, three hundred seventy-eight thousand, one hundred ninety-four".