81960348 has 12 divisors (see below), whose sum is σ = 191240840. Its totient is φ = 27320112.

The previous prime is 81960337. The next prime is 81960371. The reversal of 81960348 is 84306918.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×81960348² = 13434997288562208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3415003 + ... + 3415026.

Almost surely, 2^81960348 is an apocalyptic number.

It is an amenable number.

81960348 is an abundant number, since it is smaller than the sum of its proper divisors (109280492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81960348 is a wasteful number, since it uses less digits than its factorization.

81960348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830036 (or 6830034 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 81960348 is about 9053.1954579585. The cubic root of 81960348 is about 434.3781098961.

The spelling of 81960348 in words is "eighty-one million, nine hundred sixty thousand, three hundred forty-eight".