74212818 has 16 divisors (see below), whose sum is σ = 150641760. Its totient is φ = 24368256.

The previous prime is 74212813. The next prime is 74212819. The reversal of 74212818 is 81821247.

It is a happy number.

It is a super-2 number, since 2×74212818² = 11015084711002248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74212811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91903 + ... + 92706.

It is an arithmetic number, because the mean of its divisors is an integer number (9415110).

Almost surely, 2^74212818 is an apocalyptic number.

74212818 is an abundant number, since it is smaller than the sum of its proper divisors (76428942).

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

74212818 is a wasteful number, since it uses less digits than its factorization.

74212818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184681.

The product of its digits is 7168, while the sum is 33.

The square root of 74212818 is about 8614.6861811676. The cubic root of 74212818 is about 420.2357293477.

The spelling of 74212818 in words is "seventy-four million, two hundred twelve thousand, eight hundred eighteen".