28997453 has 2 divisors, whose sum is σ = 28997454. Its totient is φ = 28997452.

The previous prime is 28997417. The next prime is 28997483. The reversal of 28997453 is 35479982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28590409 + 407044 = 5347^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 28997453 - 2¹² = 28993357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28997398 and 28997407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28997483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14498726 + 14498727.

It is an arithmetic number, because the mean of its divisors is an integer number (14498727).

Almost surely, 2^28997453 is an apocalyptic number.

It is an amenable number.

28997453 is a deficient number, since it is larger than the sum of its proper divisors (1).

28997453 is an equidigital number, since it uses as much as digits as its factorization.

28997453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 28997453 is about 5384.9283189287. The cubic root of 28997453 is about 307.2226878329. Note that the first 3 decimals are identical.

The spelling of 28997453 in words is "twenty-eight million, nine hundred ninety-seven thousand, four hundred fifty-three".