70420992 has 120 divisors (see below), whose sum is σ = 199558656. Its totient is φ = 22063104.

The previous prime is 70420991. The next prime is 70421003. The reversal of 70420992 is 29902407.

It is a super-2 number, since 2×70420992² = 9918232228528128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70420991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554433 + ... + 554559.

Almost surely, 2^70420992 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 70420992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99779328).

70420992 is an abundant number, since it is smaller than the sum of its proper divisors (129137664).

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

70420992 is a wasteful number, since it uses less digits than its factorization.

70420992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 70420992 is about 8391.7216350401. The cubic root of 70420992 is about 412.9530830589.

The spelling of 70420992 in words is "seventy million, four hundred twenty thousand, nine hundred ninety-two".