74298840 has 384 divisors, whose sum is σ = 303367680. Its totient is φ = 14192640.

The previous prime is 74298827. The next prime is 74298853. The reversal of 74298840 is 4889247.

It is an interprime number because it is at equal distance from previous prime (74298827) and next prime (74298853).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 74298792 and 74298801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1727859 + ... + 1727901.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^74298840 is an apocalyptic number.

74298840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74298840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151683840).

74298840 is an abundant number, since it is smaller than the sum of its proper divisors (229068840).

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

74298840 is a wasteful number, since it uses less digits than its factorization.

74298840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 74298840 is about 8619.6774881662. The cubic root of 74298840 is about 420.3980353598.

The spelling of 74298840 in words is "seventy-four million, two hundred ninety-eight thousand, eight hundred forty".