70477440 has 256 divisors, whose sum is σ = 253808640. Its totient is φ = 16486400.

The previous prime is 70477417. The next prime is 70477481. The reversal of 70477440 is 4477407.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 992605 + ... + 992675.

It is an arithmetic number, because the mean of its divisors is an integer number (991440).

Almost surely, 2^70477440 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 70477440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126904320).

70477440 is an abundant number, since it is smaller than the sum of its proper divisors (183331200).

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

70477440 is a wasteful number, since it uses less digits than its factorization.

70477440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 70477440 is about 8395.0842759320. The cubic root of 70477440 is about 413.0633917863.

Subtracting from 70477440 its sum of digits (33), we obtain a palindrome (70477407).

The spelling of 70477440 in words is "seventy million, four hundred seventy-seven thousand, four hundred forty".