38487742 has 4 divisors (see below), whose sum is σ = 57731616. Its totient is φ = 19243870.

The previous prime is 38487739. The next prime is 38487769. The reversal of 38487742 is 24778483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24778483 = 811 ⋅30553.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9621934 + ... + 9621937.

It is an arithmetic number, because the mean of its divisors is an integer number (14432904).

Almost surely, 2^38487742 is an apocalyptic number.

38487742 is a deficient number, since it is larger than the sum of its proper divisors (19243874).

38487742 is a wasteful number, since it uses less digits than its factorization.

38487742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19243873.

The product of its digits is 301056, while the sum is 43.

The square root of 38487742 is about 6203.8489665691. The cubic root of 38487742 is about 337.6298306169.

The spelling of 38487742 in words is "thirty-eight million, four hundred eighty-seven thousand, seven hundred forty-two".