74259820 has 24 divisors (see below), whose sum is σ = 157701600. Its totient is φ = 29369472.

The previous prime is 74259811. The next prime is 74259841. The reversal of 74259820 is 2895247.

It is a self number, because there is not a number n which added to its sum of digits gives 74259820.

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, 19080 + ... + 22639.

It is an arithmetic number, because the mean of its divisors is an integer number (6570900).

Almost surely, 2^74259820 is an apocalyptic number.

It is an amenable number.

74259820 is an abundant number, since it is smaller than the sum of its proper divisors (83441780).

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

74259820 is a wasteful number, since it uses less digits than its factorization.

74259820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41817 (or 41815 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 74259820 is about 8617.4137651618. The cubic root of 74259820 is about 420.3244280921.

The spelling of 74259820 in words is "seventy-four million, two hundred fifty-nine thousand, eight hundred twenty".