28149702 has 16 divisors (see below), whose sum is σ = 64342272. Its totient is φ = 8042760.

The previous prime is 28149701. The next prime is 28149703. The reversal of 28149702 is 20794182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28149701) and next prime (28149703).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335074 + ... + 335157.

It is an arithmetic number, because the mean of its divisors is an integer number (4021392).

Almost surely, 2^28149702 is an apocalyptic number.

28149702 is an abundant number, since it is smaller than the sum of its proper divisors (36192570).

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

28149702 is a wasteful number, since it uses less digits than its factorization.

28149702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670243.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 28149702 is about 5305.6292746478. The cubic root of 28149702 is about 304.1991063502.

The spelling of 28149702 in words is "twenty-eight million, one hundred forty-nine thousand, seven hundred two".