74047638 has 32 divisors (see below), whose sum is σ = 170843904. Its totient is φ = 20957472.

The previous prime is 74047621. The next prime is 74047639. The reversal of 74047638 is 83674047.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74047596 and 74047605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74047639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3745 + ... + 12732.

It is an arithmetic number, because the mean of its divisors is an integer number (5338872).

Almost surely, 2^74047638 is an apocalyptic number.

74047638 is an abundant number, since it is smaller than the sum of its proper divisors (96796266).

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

74047638 is a wasteful number, since it uses less digits than its factorization.

74047638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16596.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 74047638 is about 8605.0937240683. The cubic root of 74047638 is about 419.9237163043.

The spelling of 74047638 in words is "seventy-four million, forty-seven thousand, six hundred thirty-eight".