71400090 has 16 divisors (see below), whose sum is σ = 171360288. Its totient is φ = 19040016.

The previous prime is 71400083. The next prime is 71400101. The reversal of 71400090 is 9000417.

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, 1189972 + ... + 1190031.

It is an arithmetic number, because the mean of its divisors is an integer number (10710018).

Almost surely, 2^71400090 is an apocalyptic number.

71400090 is an abundant number, since it is smaller than the sum of its proper divisors (99960198).

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

71400090 is a wasteful number, since it uses less digits than its factorization.

71400090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380013.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 71400090 is about 8449.8573952464. The cubic root of 71400090 is about 414.8581118463.

The spelling of 71400090 in words is "seventy-one million, four hundred thousand, ninety".