74288146 has 16 divisors (see below), whose sum is σ = 114605568. Its totient is φ = 36093600.

The previous prime is 74288143. The next prime is 74288177. The reversal of 74288146 is 64188247.

It is a super-2 number, since 2×74288146² = 11037457272234632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74288099 and 74288108.

It is not an unprimeable number, because it can be changed into a prime (74288141) 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 7 ways as a sum of consecutive naturals, for example, 20551 + ... + 23893.

It is an arithmetic number, because the mean of its divisors is an integer number (7162848).

Almost surely, 2^74288146 is an apocalyptic number.

74288146 is a deficient number, since it is larger than the sum of its proper divisors (40317422).

74288146 is a wasteful number, since it uses less digits than its factorization.

74288146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657.

The product of its digits is 86016, while the sum is 40.

The square root of 74288146 is about 8619.0571410103. The cubic root of 74288146 is about 420.3778647789.

It can be divided in two parts, 742 and 88146, that added together give a palindrome (88888).

The spelling of 74288146 in words is "seventy-four million, two hundred eighty-eight thousand, one hundred forty-six".