71434770 has 64 divisors (see below), whose sum is σ = 188680320. Its totient is φ = 17307840.

The previous prime is 71434763. The next prime is 71434817. The reversal of 71434770 is 7743417.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39036 + ... + 40824.

It is an arithmetic number, because the mean of its divisors is an integer number (2948130).

Almost surely, 2^71434770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71434770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94340160).

71434770 is an abundant number, since it is smaller than the sum of its proper divisors (117245550).

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

71434770 is a wasteful number, since it uses less digits than its factorization.

71434770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 71434770 is about 8451.9092517608. The cubic root of 71434770 is about 414.9252683937.

It can be divided in two parts, 714347 and 70, that added together give a palindrome (714417).

The spelling of 71434770 in words is "seventy-one million, four hundred thirty-four thousand, seven hundred seventy".