74729340 has 144 divisors (see below), whose sum is σ = 261660672. Its totient is φ = 16910208.

The previous prime is 74729329. The next prime is 74729351. The reversal of 74729340 is 4392747.

It is an interprime number because it is at equal distance from previous prime (74729329) and next prime (74729351).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 74729295 and 74729304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159787 + ... + 160253.

It is an arithmetic number, because the mean of its divisors is an integer number (1817088).

Almost surely, 2^74729340 is an apocalyptic number.

74729340 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 74729340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130830336).

74729340 is an abundant number, since it is smaller than the sum of its proper divisors (186931332).

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

74729340 is a wasteful number, since it uses less digits than its factorization.

74729340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 74729340 is about 8644.6133516774. The cubic root of 74729340 is about 421.2084245467.

The spelling of 74729340 in words is "seventy-four million, seven hundred twenty-nine thousand, three hundred forty".