78162402 has 8 divisors (see below), whose sum is σ = 156324816. Its totient is φ = 26054132.

The previous prime is 78162397. The next prime is 78162407. The reversal of 78162402 is 20426187.

It is an interprime number because it is at equal distance from previous prime (78162397) and next prime (78162407).

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

78162402 is an admirable number.

It is a super-2 number, since 2×78162402² = 12218722172819208, 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 78162402.

It is not an unprimeable number, because it can be changed into a prime (78162407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6513528 + ... + 6513539.

It is an arithmetic number, because the mean of its divisors is an integer number (19540602).

Almost surely, 2^78162402 is an apocalyptic number.

78162402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78162402 is a wasteful number, since it uses less digits than its factorization.

78162402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13027072.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 78162402 is about 8840.9502882891. The cubic root of 78162402 is about 427.5621960737.

Adding to 78162402 its reverse (20426187), we get a palindrome (98588589).

The spelling of 78162402 in words is "seventy-eight million, one hundred sixty-two thousand, four hundred two".