74298870 has 80 divisors (see below), whose sum is σ = 206735760. Its totient is φ = 19123776.

The previous prime is 74298863. The next prime is 74298881. The reversal of 74298870 is 7889247.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21909 + ... + 25071.

It is an arithmetic number, because the mean of its divisors is an integer number (2584197).

Almost surely, 2^74298870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74298870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103367880).

74298870 is an abundant number, since it is smaller than the sum of its proper divisors (132436890).

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

74298870 is a wasteful number, since it uses less digits than its factorization.

74298870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 3202 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 74298870 is about 8619.6792283704. The cubic root of 74298870 is about 420.3980919419.

The spelling of 74298870 in words is "seventy-four million, two hundred ninety-eight thousand, eight hundred seventy".