308948 has 6 divisors (see below), whose sum is σ = 540666. Its totient is φ = 154472.

The previous prime is 308939. The next prime is 308951. The reversal of 308948 is 849803.

308948 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 158404 + 150544 = 398^2 + 388^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹¹ + 0 + 9³ + 8⁵ + 4⁸ + 8⁵ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308948.

It is an unprimeable number.

308948 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38615 + ... + 38622.

It is an arithmetic number, because the mean of its divisors is an integer number (90111).

2³⁰⁸⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

308948 is a deficient number, since it is larger than the sum of its proper divisors (231718).

308948 is a wasteful number, since it uses less digits than its factorization.

308948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77241 (or 77239 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 308948 is about 555.8309095399. The cubic root of 308948 is about 67.6023504429.

The spelling of 308948 in words is "three hundred eight thousand, nine hundred forty-eight".