71853480 has 160 divisors (see below), whose sum is σ = 245852640. Its totient is φ = 18817920.

The previous prime is 71853469. The next prime is 71853493. The reversal of 71853480 is 8435817.

It is a super-2 number, since 2×71853480² = 10325845176220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 216915 + ... + 217245.

It is an arithmetic number, because the mean of its divisors is an integer number (1536579).

Almost surely, 2^71853480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71853480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122926320).

71853480 is an abundant number, since it is smaller than the sum of its proper divisors (173999160).

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

71853480 is a wasteful number, since it uses less digits than its factorization.

71853480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 71853480 is about 8476.6432035329. The cubic root of 71853480 is about 415.7343749307.

The spelling of 71853480 in words is "seventy-one million, eight hundred fifty-three thousand, four hundred eighty".