28400962 has 4 divisors (see below), whose sum is σ = 42601446. Its totient is φ = 14200480.

The previous prime is 28400959. The next prime is 28400963. The reversal of 28400962 is 26900482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23902321 + 4498641 = 4889^2 + 2121^2 .

It is a super-2 number, since 2×28400962² = 1613229285050888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28400963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7100239 + ... + 7100242.

Almost surely, 2^28400962 is an apocalyptic number.

28400962 is a deficient number, since it is larger than the sum of its proper divisors (14200484).

28400962 is a wasteful number, since it uses less digits than its factorization.

28400962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14200483.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28400962 is about 5329.2552950670. The cubic root of 28400962 is about 305.1015052277.

The spelling of 28400962 in words is "twenty-eight million, four hundred thousand, nine hundred sixty-two".