70977228 has 96 divisors (see below), whose sum is σ = 198094848. Its totient is φ = 19353600.

The previous prime is 70977223. The next prime is 70977253. The reversal of 70977228 is 82277907.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 70977228.

It is not an unprimeable number, because it can be changed into a prime (70977223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252448 + ... + 252728.

It is an arithmetic number, because the mean of its divisors is an integer number (2063488).

Almost surely, 2^70977228 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 70977228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99047424).

70977228 is an abundant number, since it is smaller than the sum of its proper divisors (127117620).

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

70977228 is a wasteful number, since it uses less digits than its factorization.

70977228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 70977228 is about 8424.7983952140. The cubic root of 70977228 is about 414.0375003955.

The spelling of 70977228 in words is "seventy million, nine hundred seventy-seven thousand, two hundred twenty-eight".