70429824 has 80 divisors (see below), whose sum is σ = 209628870. Its totient is φ = 23473152.

The previous prime is 70429823. The next prime is 70429897. The reversal of 70429824 is 42892407.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 1871424 = 8280^2 + 1368^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70429823) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6972 + ... + 13764.

Almost surely, 2^70429824 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 70429824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104814435).

70429824 is an abundant number, since it is smaller than the sum of its proper divisors (139199046).

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

70429824 is an equidigital number, since it uses as much as digits as its factorization.

70429824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819 (or 6798 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 70429824 is about 8392.2478514400. The cubic root of 70429824 is about 412.9703461366.

It can be divided in two parts, 70429 and 824, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 70429824 in words is "seventy million, four hundred twenty-nine thousand, eight hundred twenty-four".