71493474 has 16 divisors (see below), whose sum is σ = 153986112. Its totient is φ = 21997968.

The previous prime is 71493469. The next prime is 71493479. The reversal of 71493474 is 47439417.

It is an interprime number because it is at equal distance from previous prime (71493469) and next prime (71493479).

It is a super-2 number, since 2×71493474² = 10222633649177352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (71493479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458214 + ... + 458369.

It is an arithmetic number, because the mean of its divisors is an integer number (9624132).

Almost surely, 2^71493474 is an apocalyptic number.

71493474 is an abundant number, since it is smaller than the sum of its proper divisors (82492638).

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

71493474 is a wasteful number, since it uses less digits than its factorization.

71493474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916601.

The product of its digits is 84672, while the sum is 39.

The square root of 71493474 is about 8455.3813633685. The cubic root of 71493474 is about 415.0388970170.

The spelling of 71493474 in words is "seventy-one million, four hundred ninety-three thousand, four hundred seventy-four".