74447240 has 32 divisors (see below), whose sum is σ = 191436480. Its totient is φ = 25524672.

The previous prime is 74447239. The next prime is 74447257. The reversal of 74447240 is 4274447.

It is a junction number, because it is equal to n+sod(n) for n = 74447197 and 74447206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132662 + ... + 133221.

It is an arithmetic number, because the mean of its divisors is an integer number (5982390).

Almost surely, 2^74447240 is an apocalyptic number.

74447240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

74447240 is an abundant number, since it is smaller than the sum of its proper divisors (116989240).

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

74447240 is a wasteful number, since it uses less digits than its factorization.

74447240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265901 (or 265897 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 74447240 is about 8628.2814047758. The cubic root of 74447240 is about 420.6777417385.

The spelling of 74447240 in words is "seventy-four million, four hundred forty-seven thousand, two hundred forty".