78532402 has 16 divisors (see below), whose sum is σ = 127012032. Its totient is φ = 36202320.

The previous prime is 78532397. The next prime is 78532409. The reversal of 78532402 is 20423587.

It is not an unprimeable number, because it can be changed into a prime (78532409) 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, 32827 + ... + 35137.

It is an arithmetic number, because the mean of its divisors is an integer number (7938252).

Almost surely, 2^78532402 is an apocalyptic number.

78532402 is a deficient number, since it is larger than the sum of its proper divisors (48479630).

78532402 is a wasteful number, since it uses less digits than its factorization.

78532402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 78532402 is about 8861.8509353295. The cubic root of 78532402 is about 428.2357895172.

Adding to 78532402 its reverse (20423587), we get a palindrome (98955989).

The spelling of 78532402 in words is "seventy-eight million, five hundred thirty-two thousand, four hundred two".