38454490 has 8 divisors (see below), whose sum is σ = 69218100. Its totient is φ = 15381792.

The previous prime is 38454473. The next prime is 38454491. The reversal of 38454490 is 9445483.

It can be written as a sum of positive squares in 2 ways, for example, as 31169889 + 7284601 = 5583^2 + 2699^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (38454491) 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, 1922715 + ... + 1922734.

Almost surely, 2^38454490 is an apocalyptic number.

38454490 is a deficient number, since it is larger than the sum of its proper divisors (30763610).

38454490 is a wasteful number, since it uses less digits than its factorization.

38454490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845456.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 38454490 is about 6201.1684382864. The cubic root of 38454490 is about 337.5325693306.

The spelling of 38454490 in words is "thirty-eight million, four hundred fifty-four thousand, four hundred ninety".