71266420 has 24 divisors (see below), whose sum is σ = 156167424. Its totient is φ = 27266976.

The previous prime is 71266411. The next prime is 71266457. The reversal of 71266420 is 2466217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77004 + ... + 77923.

It is an arithmetic number, because the mean of its divisors is an integer number (6506976).

Almost surely, 2^71266420 is an apocalyptic number.

It is an amenable number.

71266420 is an abundant number, since it is smaller than the sum of its proper divisors (84901004).

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

71266420 is a wasteful number, since it uses less digits than its factorization.

71266420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154959 (or 154957 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 71266420 is about 8441.9440888933. The cubic root of 71266420 is about 414.5990611666.

The spelling of 71266420 in words is "seventy-one million, two hundred sixty-six thousand, four hundred twenty".