38648890 has 16 divisors (see below), whose sum is σ = 79506432. Its totient is φ = 13251024.

The previous prime is 38648849. The next prime is 38648917. The reversal of 38648890 is 9884683.

It is a self number, because there is not a number n which added to its sum of digits gives 38648890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275994 + ... + 276133.

It is an arithmetic number, because the mean of its divisors is an integer number (4969152).

Almost surely, 2^38648890 is an apocalyptic number.

38648890 is an abundant number, since it is smaller than the sum of its proper divisors (40857542).

38648890 is a wasteful number, since it uses less digits than its factorization.

38648890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552141.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 38648890 is about 6216.8231436965. The cubic root of 38648890 is about 338.1003926660.

The spelling of 38648890 in words is "thirty-eight million, six hundred forty-eight thousand, eight hundred ninety".