70428914 has 4 divisors (see below), whose sum is σ = 105643374. Its totient is φ = 35214456.

The previous prime is 70428913. The next prime is 70428923. The reversal of 70428914 is 41982407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41982407 = 181 ⋅231947.

It can be written as a sum of positive squares in only one way, i.e., 69438889 + 990025 = 8333^2 + 995^2 .

It is not an unprimeable number, because it can be changed into a prime (70428913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17607227 + ... + 17607230.

Almost surely, 2^70428914 is an apocalyptic number.

70428914 is a deficient number, since it is larger than the sum of its proper divisors (35214460).

70428914 is a wasteful number, since it uses less digits than its factorization.

70428914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35214459.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 70428914 is about 8392.1936345630. The cubic root of 70428914 is about 412.9685675121.

The spelling of 70428914 in words is "seventy million, four hundred twenty-eight thousand, nine hundred fourteen".