69972378 has 32 divisors (see below), whose sum is σ = 163344384. Its totient is φ = 19566192.

The previous prime is 69972377. The next prime is 69972437. The reversal of 69972378 is 87327996.

It is a super-2 number, since 2×69972378² = 9792267365949768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69972378.

It is not an unprimeable number, because it can be changed into a prime (69972377) 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 15 ways as a sum of consecutive naturals, for example, 15750 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (5104512).

Almost surely, 2^69972378 is an apocalyptic number.

69972378 is an abundant number, since it is smaller than the sum of its proper divisors (93372006).

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

69972378 is a wasteful number, since it uses less digits than its factorization.

69972378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35506.

The product of its digits is 1143072, while the sum is 51.

The square root of 69972378 is about 8364.9493722317. The cubic root of 69972378 is about 412.0743142097.

The spelling of 69972378 in words is "sixty-nine million, nine hundred seventy-two thousand, three hundred seventy-eight".