74240449290 has 192 divisors, whose sum is σ = 230505264000. Its totient is φ = 16953898752.

The previous prime is 74240449279. The next prime is 74240449307. The reversal of 74240449290 is 9294404247.

74240449290 is a `hidden beast` number, since 74 + 2 + 4 + 0 + 4 + 492 + 90 = 666.

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

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, 21523486 + ... + 21526934.

It is an arithmetic number, because the mean of its divisors is an integer number (1200548250).

Almost surely, 2^74240449290 is an apocalyptic number.

74240449290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74240449290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115252632000).

74240449290 is an abundant number, since it is smaller than the sum of its proper divisors (156264814710).

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

74240449290 is a wasteful number, since it uses less digits than its factorization.

74240449290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106 (or 5093 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 74240449290 in words is "seventy-four billion, two hundred forty million, four hundred forty-nine thousand, two hundred ninety".