74302981 has 4 divisors (see below), whose sum is σ = 74732652. Its totient is φ = 73873312.

The previous prime is 74302967. The next prime is 74302997. The reversal of 74302981 is 18920347.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60980481 + 13322500 = 7809^2 + 3650^2 .

It is a cyclic number.

It is not a de Polignac number, because 74302981 - 2¹³ = 74294789 is a prime.

It is a super-2 number, since 2×74302981² = 11041865970972722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74302961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214576 + ... + 214921.

It is an arithmetic number, because the mean of its divisors is an integer number (18683163).

Almost surely, 2^74302981 is an apocalyptic number.

It is an amenable number.

74302981 is a deficient number, since it is larger than the sum of its proper divisors (429671).

74302981 is a wasteful number, since it uses less digits than its factorization.

74302981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429670.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 74302981 is about 8619.9176910223. The cubic root of 74302981 is about 420.4058454231.

The spelling of 74302981 in words is "seventy-four million, three hundred two thousand, nine hundred eighty-one".