78152002 has 8 divisors (see below), whose sum is σ = 117412812. Its totient is φ = 39014400.

The previous prime is 78151991. The next prime is 78152003. The reversal of 78152002 is 20025187.

It can be written as a sum of positive squares in 2 ways, for example, as 76895361 + 1256641 = 8769^2 + 1121^2 .

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

It is a super-2 number, since 2×78152002² = 12215470833216008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78152003) 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, 29199 + ... + 31762.

Almost surely, 2^78152002 is an apocalyptic number.

78152002 is a deficient number, since it is larger than the sum of its proper divisors (39260810).

78152002 is a wasteful number, since it uses less digits than its factorization.

78152002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61604.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 78152002 is about 8840.3620966564. The cubic root of 78152002 is about 427.5432319513.

Adding to 78152002 its reverse (20025187), we get a palindrome (98177189).

The spelling of 78152002 in words is "seventy-eight million, one hundred fifty-two thousand, two".