248216638 has 4 divisors (see below), whose sum is σ = 372324960. Its totient is φ = 124108318.

The previous prime is 248216587. The next prime is 248216641. The reversal of 248216638 is 836612842.

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

It is a super-2 number, since 2×248216638² = 123222998760046088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 248216638.

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, 62054158 + ... + 62054161.

It is an arithmetic number, because the mean of its divisors is an integer number (93081240).

Almost surely, 2^248216638 is an apocalyptic number.

248216638 is a deficient number, since it is larger than the sum of its proper divisors (124108322).

248216638 is a wasteful number, since it uses less digits than its factorization.

248216638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124108321.

The product of its digits is 110592, while the sum is 40.

The square root of 248216638 is about 15754.8925099475. The cubic root of 248216638 is about 628.4590187464.

The spelling of 248216638 in words is "two hundred forty-eight million, two hundred sixteen thousand, six hundred thirty-eight".