698947428 has 24 divisors (see below), whose sum is σ = 1639892800. Its totient is φ = 231694560.

The previous prime is 698947409. The next prime is 698947451. The reversal of 698947428 is 824749896.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158728 + ... + 163071.

Almost surely, 2^698947428 is an apocalyptic number.

It is an amenable number.

698947428 is an abundant number, since it is smaller than the sum of its proper divisors (940945372).

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

698947428 is a wasteful number, since it uses less digits than its factorization.

698947428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321987 (or 321985 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 698947428 is about 26437.6138862795. The cubic root of 698947428 is about 887.4587390194.

The spelling of 698947428 in words is "six hundred ninety-eight million, nine hundred forty-seven thousand, four hundred twenty-eight".