28861070 has 64 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 9165312.

The previous prime is 28861051. The next prime is 28861103. The reversal of 28861070 is 7016882.

It is a super-2 number, since 2×28861070² = 1665922723089800, which contains 22 as substring.

It is a congruent number.

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, 93857 + ... + 94163.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^28861070 is an apocalyptic number.

28861070 is an abundant number, since it is smaller than the sum of its proper divisors (35005810).

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

28861070 is a wasteful number, since it uses less digits than its factorization.

28861070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28861070 is about 5372.2499941831. The cubic root of 28861070 is about 306.7402797973.

The spelling of 28861070 in words is "twenty-eight million, eight hundred sixty-one thousand, seventy".