78213002 has 16 divisors (see below), whose sum is σ = 135778560. Its totient is φ = 33095088.

The previous prime is 78212951. The next prime is 78213007. The reversal of 78213002 is 20031287.

It is a super-2 number, since 2×78213002² = 12234547363704008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78213007) 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, 34253 + ... + 36464.

It is an arithmetic number, because the mean of its divisors is an integer number (8486160).

Almost surely, 2^78213002 is an apocalyptic number.

78213002 is a deficient number, since it is larger than the sum of its proper divisors (57565558).

78213002 is a wasteful number, since it uses less digits than its factorization.

78213002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70805.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 78213002 is about 8843.8115086200. The cubic root of 78213002 is about 427.6544398282.

Adding to 78213002 its reverse (20031287), we get a palindrome (98244289).

The spelling of 78213002 in words is "seventy-eight million, two hundred thirteen thousand, two".