71420804 has 48 divisors (see below), whose sum is σ = 158016768. Its totient is φ = 27485568.

The previous prime is 71420803. The next prime is 71420827. The reversal of 71420804 is 40802417.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (71420803) 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, 10817 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (3292016).

Almost surely, 2^71420804 is an apocalyptic number.

71420804 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71420804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79008384).

71420804 is an abundant number, since it is smaller than the sum of its proper divisors (86595964).

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

71420804 is a wasteful number, since it uses less digits than its factorization.

71420804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364 (or 5362 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 71420804 is about 8451.0830075204. The cubic root of 71420804 is about 414.8982263618.

The spelling of 71420804 in words is "seventy-one million, four hundred twenty thousand, eight hundred four".