70785432 has 24 divisors (see below), whose sum is σ = 191710740. Its totient is φ = 23595120.

The previous prime is 70785419. The next prime is 70785443. The reversal of 70785432 is 23458707.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 491494 + ... + 491637.

Almost surely, 2^70785432 is an apocalyptic number.

70785432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70785432 is an abundant number, since it is smaller than the sum of its proper divisors (120925308).

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

70785432 is a wasteful number, since it uses less digits than its factorization.

70785432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983143 (or 983136 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 70785432 is about 8413.4078707739. The cubic root of 70785432 is about 413.6642239957.

It can be divided in two parts, 70785 and 432, that added together give a palindrome (71217).

The spelling of 70785432 in words is "seventy million, seven hundred eighty-five thousand, four hundred thirty-two".