71403402 has 32 divisors (see below), whose sum is σ = 166292352. Its totient is φ = 20015424.

The previous prime is 71403391. The next prime is 71403403. The reversal of 71403402 is 20430417.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (71403403) 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, 13813 + ... + 18264.

It is an arithmetic number, because the mean of its divisors is an integer number (5196636).

Almost surely, 2^71403402 is an apocalyptic number.

71403402 is an abundant number, since it is smaller than the sum of its proper divisors (94888950).

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

71403402 is a wasteful number, since it uses less digits than its factorization.

71403402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32142.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 71403402 is about 8450.0533726125. The cubic root of 71403402 is about 414.8645263519.

Adding to 71403402 its reverse (20430417), we get a palindrome (91833819).

The spelling of 71403402 in words is "seventy-one million, four hundred three thousand, four hundred two".