81478350 has 36 divisors (see below), whose sum is σ = 218906376. Its totient is φ = 21727440.

The previous prime is 81478349. The next prime is 81478373. The reversal of 81478350 is 5387418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90082 + ... + 90981.

Almost surely, 2^81478350 is an apocalyptic number.

81478350 is an abundant number, since it is smaller than the sum of its proper divisors (137428026).

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

81478350 is a wasteful number, since it uses less digits than its factorization.

81478350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181081 (or 181073 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 81478350 is about 9026.5358803918. The cubic root of 81478350 is about 433.5249284244.

The spelling of 81478350 in words is "eighty-one million, four hundred seventy-eight thousand, three hundred fifty".