78295330 has 32 divisors (see below), whose sum is σ = 147155760. Its totient is φ = 29963520.

The previous prime is 78295313. The next prime is 78295337. The reversal of 78295330 is 3359287.

It can be written as a sum of positive squares in 8 ways, for example, as 8288641 + 70006689 = 2879^2 + 8367^2 .

It is a super-2 number, since 2×78295330² = 12260317399617800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 78295330.

It is not an unprimeable number, because it can be changed into a prime (78295337) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20836 + ... + 24304.

Almost surely, 2^78295330 is an apocalyptic number.

78295330 is a deficient number, since it is larger than the sum of its proper divisors (68860430).

78295330 is a wasteful number, since it uses less digits than its factorization.

78295330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 78295330 is about 8848.4648386034. The cubic root of 78295330 is about 427.8044387099.

The spelling of 78295330 in words is "seventy-eight million, two hundred ninety-five thousand, three hundred thirty".