81419702 has 32 divisors (see below), whose sum is σ = 155172864. Its totient is φ = 31168800.

The previous prime is 81419699. The next prime is 81419707. The reversal of 81419702 is 20791418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81419707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1574 + ... + 12857.

It is an arithmetic number, because the mean of its divisors is an integer number (4849152).

Almost surely, 2^81419702 is an apocalyptic number.

81419702 is a deficient number, since it is larger than the sum of its proper divisors (73753162).

81419702 is a wasteful number, since it uses less digits than its factorization.

81419702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14484.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 81419702 is about 9023.2866517694. The cubic root of 81419702 is about 433.4208865825.

The spelling of 81419702 in words is "eighty-one million, four hundred nineteen thousand, seven hundred two".