38961578 has 4 divisors (see below), whose sum is σ = 58442370. Its totient is φ = 19480788.

The previous prime is 38961551. The next prime is 38961583. The reversal of 38961578 is 87516983.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 30063289 + 8898289 = 5483^2 + 2983^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9740393 + ... + 9740396.

Almost surely, 2^38961578 is an apocalyptic number.

38961578 is a deficient number, since it is larger than the sum of its proper divisors (19480792).

38961578 is a wasteful number, since it uses less digits than its factorization.

38961578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19480791.

The product of its digits is 362880, while the sum is 47.

The square root of 38961578 is about 6241.9210184045. The cubic root of 38961578 is about 339.0097426448.

The spelling of 38961578 in words is "thirty-eight million, nine hundred sixty-one thousand, five hundred seventy-eight".