74297140 has 24 divisors (see below), whose sum is σ = 165202632. Its totient is φ = 27970560.

The previous prime is 74297117. The next prime is 74297141. The reversal of 74297140 is 4179247.

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 73650724 = 804^2 + 8582^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 74297096 and 74297105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74297141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108921 + ... + 109600.

It is an arithmetic number, because the mean of its divisors is an integer number (6883443).

Almost surely, 2^74297140 is an apocalyptic number.

It is an amenable number.

74297140 is an abundant number, since it is smaller than the sum of its proper divisors (90905492).

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

74297140 is a wasteful number, since it uses less digits than its factorization.

74297140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218547 (or 218545 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 74297140 is about 8619.5788760240. The cubic root of 74297140 is about 420.3948290195.

The spelling of 74297140 in words is "seventy-four million, two hundred ninety-seven thousand, one hundred forty".