70428744 has 96 divisors (see below), whose sum is σ = 207516000. Its totient is φ = 22070880.

The previous prime is 70428731. The next prime is 70428779. The reversal of 70428744 is 44782407.

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

It is a junction number, because it is equal to n+sod(n) for n = 70428699 and 70428708.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537559 + ... + 537689.

It is an arithmetic number, because the mean of its divisors is an integer number (2161625).

Almost surely, 2^70428744 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 70428744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103758000).

70428744 is an abundant number, since it is smaller than the sum of its proper divisors (137087256).

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

70428744 is a wasteful number, since it uses less digits than its factorization.

70428744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 70428744 is about 8392.1835060966. The cubic root of 70428744 is about 412.9682352399.

The spelling of 70428744 in words is "seventy million, four hundred twenty-eight thousand, seven hundred forty-four".